6900531656 has 8 divisors (see below), whose sum is σ = 12938496870.
Its totient is φ = 3450265824.
The previous prime is 6900531641. The next prime is 6900531661. The reversal of 6900531656 is 6561350096.
It can be written as a sum of positive squares in only one way, i.e., 6864122500 + 36409156 = 82850^2 + 6034^2
It is a tau number, because it is divible by the number of its divisors (8).
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431283221 + ... + 431283236.
Almost surely, 26900531656 is an apocalyptic number.
It is an amenable number.
6900531656 is a deficient number, since it is larger than the sum of its proper divisors (6037965214).
6900531656 is a wasteful number, since it uses less digits than its factorization.
6900531656 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 862566463 (or 862566459 counting only the distinct ones).
The product of its (nonzero) digits is 145800, while the sum is 41.
The square root of 6900531656 is about 83069.4387605935.
The cubic root of 6900531656 is about 1903.8271570909.
The spelling of 6900531656 in words is "six billion, nine hundred million, five hundred thirty-one thousand, six hundred fifty-six".