6897824029656 has 96 divisors (see below), whose sum is σ = 21382806931200. Its totient is φ = 1967816168640.

The previous prime is 6897824029627. The next prime is 6897824029739. The reversal of 6897824029656 is 6569204287986.

It is a happy number.

6897824029656 is a `hidden beast` number, since 6 + 8 + 9 + 7 + 82 + 402 + 96 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10051900 + ... + 10716171.

It is an arithmetic number, because the mean of its divisors is an integer number (222737572200).

Almost surely, 2^{6897824029656} is an apocalyptic number.

It is an amenable number.

6897824029656 is an abundant number, since it is smaller than the sum of its proper divisors (14484982901544).

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

6897824029656 is a wasteful number, since it uses less digits than its factorization.

6897824029656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20768749 (or 20768742 counting only the distinct ones).

The product of its (nonzero) digits is 627056640, while the sum is 72.

The spelling of 6897824029656 in words is "six trillion, eight hundred ninety-seven billion, eight hundred twenty-four million, twenty-nine thousand, six hundred fifty-six".