6454671656 has 96 divisors (see below), whose sum is σ = 13287267000. Its totient is φ = 2937077760.

The previous prime is 6454671653. The next prime is 6454671701. The reversal of 6454671656 is 6561764546.

It can be written as a sum of positive squares in 12 ways, for example, as 944578756 + 5510092900 = 30734^2 + 74230^2 .

It is not an unprimeable number, because it can be changed into a prime (6454671653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14123780 + ... + 14124236.

Almost surely, 2^6454671656 is an apocalyptic number.

It is an amenable number.

6454671656 is an abundant number, since it is smaller than the sum of its proper divisors (6832595344).

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

6454671656 is a wasteful number, since it uses less digits than its factorization.

6454671656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687 (or 666 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 50.

The square root of 6454671656 is about 80340.9712164348. The cubic root of 6454671656 is about 1861.9072870131.

The spelling of 6454671656 in words is "six billion, four hundred fifty-four million, six hundred seventy-one thousand, six hundred fifty-six".