690050256 has 40 divisors (see below), whose sum is σ = 2037292224. Its totient is φ = 197157120.

The previous prime is 690050171. The next prime is 690050293. The reversal of 690050256 is 652050096.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1026525 + ... + 1027196.

Almost surely, 2^690050256 is an apocalyptic number.

It is an amenable number.

690050256 is an abundant number, since it is smaller than the sum of its proper divisors (1347241968).

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

690050256 is a wasteful number, since it uses less digits than its factorization.

690050256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053739 (or 2053733 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 690050256 is about 26268.8076623207. The cubic root of 690050256 is about 883.6770453405.

The spelling of 690050256 in words is "six hundred ninety million, fifty thousand, two hundred fifty-six".