1087646256 has 60 divisors (see below), whose sum is σ = 3075318792. Its totient is φ = 358806528.

The previous prime is 1087646251. The next prime is 1087646291. The reversal of 1087646256 is 6526467801.

1087646256 is a `hidden beast` number, since 10 + 8 + 7 + 6 + 4 + 625 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1087646251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24966 + ... + 52901.

Almost surely, 2^1087646256 is an apocalyptic number.

1087646256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1087646256 is an abundant number, since it is smaller than the sum of its proper divisors (1987672536).

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

1087646256 is a wasteful number, since it uses less digits than its factorization.

1087646256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77978 (or 77969 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 1087646256 is about 32979.4823488787. The cubic root of 1087646256 is about 1028.4011566027.

The spelling of 1087646256 in words is "one billion, eighty-seven million, six hundred forty-six thousand, two hundred fifty-six".