634954986 has 12 divisors (see below), whose sum is σ = 1375735842. Its totient is φ = 211651656.

The previous prime is 634954973. The next prime is 634954993. The reversal of 634954986 is 689459436.

634954986 is a `hidden beast` number, since 63 + 4 + 95 + 498 + 6 = 666.

634954986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 634284225 + 670761 = 25185^2 + 819^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17637621 + ... + 17637656.

Almost surely, 2^634954986 is an apocalyptic number.

634954986 is an abundant number, since it is smaller than the sum of its proper divisors (740780856).

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

634954986 is a wasteful number, since it uses less digits than its factorization.

634954986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35275285 (or 35275282 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The square root of 634954986 is about 25198.3131578286. The cubic root of 634954986 is about 859.5034929253.

The spelling of 634954986 in words is "six hundred thirty-four million, nine hundred fifty-four thousand, nine hundred eighty-six".