6931274805 has 96 divisors (see below), whose sum is σ = 14965606656. Its totient is φ = 2889464832.

The previous prime is 6931274773. The next prime is 6931274807. The reversal of 6931274805 is 5084721396.

6931274805 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6931274805 - 2⁵ = 6931274773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

6931274805 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6931274807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 329689 + ... + 350081.

It is an arithmetic number, because the mean of its divisors is an integer number (155891736).

It is a 1-persistent number, because it is pandigital, but 2⋅6931274805 = 13862549610 is not.

Almost surely, 2^6931274805 is an apocalyptic number.

6931274805 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6931274805 is the 67977-th pentagonal number.

It is an amenable number.

6931274805 is an abundant number, since it is smaller than the sum of its proper divisors (8034331851).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6931274805 is a wasteful number, since it uses less digits than its factorization.

6931274805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20507 (or 20504 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 6931274805 is about 83254.2779981906. The cubic root of 6931274805 is about 1906.6502698226.

The spelling of 6931274805 in words is "six billion, nine hundred thirty-one million, two hundred seventy-four thousand, eight hundred five".