8668731456 has 784 divisors, whose sum is σ = 34114191360. Its totient is φ = 2116316160.

The previous prime is 8668731433. The next prime is 8668731473. The reversal of 8668731456 is 6541378668.

8668731456 is a `hidden beast` number, since 86 + 6 + 87 + 31 + 456 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 68257665 + ... + 68257791.

Almost surely, 2^8668731456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8668731456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17057095680).

8668731456 is an abundant number, since it is smaller than the sum of its proper divisors (25445459904).

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

8668731456 is a wasteful number, since it uses less digits than its factorization.

8668731456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 169 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 8668731456 is about 93106.0226623391. The cubic root of 8668731456 is about 2054.2431610113.

The spelling of 8668731456 in words is "eight billion, six hundred sixty-eight million, seven hundred thirty-one thousand, four hundred fifty-six".