632690538 has 32 divisors (see below), whose sum is σ = 1333463040. Its totient is φ = 199574640.

The previous prime is 632690537. The next prime is 632690573. The reversal of 632690538 is 835096236.

It is a self number, because there is not a number n which added to its sum of digits gives 632690538.

It is not an unprimeable number, because it can be changed into a prime (632690533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121831 + ... + 126917.

It is an arithmetic number, because the mean of its divisors is an integer number (41670720).

Almost surely, 2^632690538 is an apocalyptic number.

632690538 is an abundant number, since it is smaller than the sum of its proper divisors (700772502).

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

632690538 is a wasteful number, since it uses less digits than its factorization.

632690538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202.

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 632690538 is about 25153.3404938589. The cubic root of 632690538 is about 858.4805231561.

The spelling of 632690538 in words is "six hundred thirty-two million, six hundred ninety thousand, five hundred thirty-eight".