690038317250 has 128 divisors (see below), whose sum is σ = 1408268721600. Its totient is φ = 252116582400.

The previous prime is 690038317153. The next prime is 690038317271. The reversal of 690038317250 is 52713830096.

It can be written as a sum of positive squares in 32 ways, for example, as 13921876081 + 676116441169 = 117991^2 + 822263^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64309886 + ... + 64320614.

Almost surely, 2^690038317250 is an apocalyptic number.

690038317250 is an abundant number, since it is smaller than the sum of its proper divisors (718230404350).

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

690038317250 is a wasteful number, since it uses less digits than its factorization.

690038317250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11209 (or 11199 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 690038317250 in words is "six hundred ninety billion, thirty-eight million, three hundred seventeen thousand, two hundred fifty".