635442056 has 8 divisors (see below), whose sum is σ = 1191453870. Its totient is φ = 317721024.

The previous prime is 635442043. The next prime is 635442079. The reversal of 635442056 is 650244536.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 328841956 + 306600100 = 18134^2 + 17510^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 39715121 + ... + 39715136.

Almost surely, 2^635442056 is an apocalyptic number.

It is an amenable number.

635442056 is a deficient number, since it is larger than the sum of its proper divisors (556011814).

635442056 is a wasteful number, since it uses less digits than its factorization.

635442056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79430263 (or 79430259 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 635442056 is about 25207.9760393412. The cubic root of 635442056 is about 859.7232100056.

The spelling of 635442056 in words is "six hundred thirty-five million, four hundred forty-two thousand, fifty-six".