6974201781 has 12 divisors (see below), whose sum is σ = 10398810240. Its totient is φ = 4499484840.

The previous prime is 6974201761. The next prime is 6974201809. The reversal of 6974201781 is 1871024796.

It is a happy number.

It is not a de Polignac number, because 6974201781 - 2⁷ = 6974201653 is a prime.

It is a super-2 number, since 2×6974201781² = 97278980964207143922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6974201701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12498291 + ... + 12498848.

It is an arithmetic number, because the mean of its divisors is an integer number (866567520).

Almost surely, 2^6974201781 is an apocalyptic number.

It is an amenable number.

6974201781 is a deficient number, since it is larger than the sum of its proper divisors (3424608459).

6974201781 is a wasteful number, since it uses less digits than its factorization.

6974201781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24997176 (or 24997173 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 6974201781 is about 83511.6864935681. The cubic root of 6974201781 is about 1910.5782795294.

The spelling of 6974201781 in words is "six billion, nine hundred seventy-four million, two hundred one thousand, seven hundred eighty-one".