690826308872 has 32 divisors (see below), whose sum is σ = 1486536019200. Its totient is φ = 294829632384.

The previous prime is 690826308869. The next prime is 690826308899. The reversal of 690826308872 is 278803628096.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 25794533 + ... + 25821300.

It is an arithmetic number, because the mean of its divisors is an integer number (46454250600).

Almost surely, 2^690826308872 is an apocalyptic number.

It is an amenable number.

690826308872 is an abundant number, since it is smaller than the sum of its proper divisors (795709710328).

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

690826308872 is a wasteful number, since it uses less digits than its factorization.

690826308872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51616085 (or 51616081 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 690826308872 in words is "six hundred ninety billion, eight hundred twenty-six million, three hundred eight thousand, eight hundred seventy-two".