690265856 has 36 divisors (see below), whose sum is σ = 1574673072. Its totient is φ = 295827456.

The previous prime is 690265853. The next prime is 690265889. The reversal of 690265856 is 658562096.

It is a self number, because there is not a number n which added to its sum of digits gives 690265856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690265853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190805 + ... + 194388.

Almost surely, 2^690265856 is an apocalyptic number.

It is an amenable number.

690265856 is an abundant number, since it is smaller than the sum of its proper divisors (884407216).

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

690265856 is an equidigital number, since it uses as much as digits as its factorization.

690265856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385216 (or 385202 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 690265856 is about 26272.9110682467. The cubic root of 690265856 is about 883.7690680739.

The spelling of 690265856 in words is "six hundred ninety million, two hundred sixty-five thousand, eight hundred fifty-six".