634536556 has 6 divisors (see below), whose sum is σ = 1110438980. Its totient is φ = 317268276.

The previous prime is 634536527. The next prime is 634536557. The reversal of 634536556 is 655635436.

It is a super-2 number, since 2×634536556² = 805273281800682272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (634536557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79317066 + ... + 79317073.

Almost surely, 2^634536556 is an apocalyptic number.

It is an amenable number.

634536556 is a deficient number, since it is larger than the sum of its proper divisors (475902424).

634536556 is a wasteful number, since it uses less digits than its factorization.

634536556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158634143 (or 158634141 counting only the distinct ones).

The product of its digits is 972000, while the sum is 43.

The square root of 634536556 is about 25190.0090512092. The cubic root of 634536556 is about 859.3146495775.

The spelling of 634536556 in words is "six hundred thirty-four million, five hundred thirty-six thousand, five hundred fifty-six".