886640256 has 80 divisors (see below), whose sum is σ = 2638657890. Its totient is φ = 295543296.

The previous prime is 886640243. The next prime is 886640257. The reversal of 886640256 is 652046688.

It can be written as a sum of positive squares in only one way, i.e., 624200256 + 262440000 = 24984^2 + 16200^2 .

It is a super-2 number, since 2×886640256² = 1572261887119491072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (886640257) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32391 + ... + 53126.

Almost surely, 2^886640256 is an apocalyptic number.

It is an amenable number.

886640256 is an abundant number, since it is smaller than the sum of its proper divisors (1752017634).

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

886640256 is an equidigital number, since it uses as much as digits as its factorization.

886640256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85543 (or 85522 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The square root of 886640256 is about 29776.5051004983. The cubic root of 886640256 is about 960.6882564478.

The spelling of 886640256 in words is "eight hundred eighty-six million, six hundred forty thousand, two hundred fifty-six".