6900531657 has 8 divisors (see below), whose sum is σ = 9262459200. Its totient is φ = 4569479280.

The previous prime is 6900531641. The next prime is 6900531661. The reversal of 6900531657 is 7561350096.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6900531657 - 2⁴ = 6900531641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6900531637) 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 7 ways as a sum of consecutive naturals, for example, 7718269 + ... + 7719162.

It is an arithmetic number, because the mean of its divisors is an integer number (1157807400).

Almost surely, 2^6900531657 is an apocalyptic number.

It is an amenable number.

6900531657 is a deficient number, since it is larger than the sum of its proper divisors (2361927543).

6900531657 is a wasteful number, since it uses less digits than its factorization.

6900531657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15437583.

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 6900531657 is about 83069.4387666126. The cubic root of 6900531657 is about 1903.8271571828.

The spelling of 6900531657 in words is "six billion, nine hundred million, five hundred thirty-one thousand, six hundred fifty-seven".