634906152 has 24 divisors (see below), whose sum is σ = 1719537690. Its totient is φ = 211635360.

The previous prime is 634906141. The next prime is 634906159. The reversal of 634906152 is 251609436.

It is a happy number.

634906152 is a `hidden beast` number, since 6 + 34 + 9 + 0 + 615 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 596043396 + 38862756 = 24414^2 + 6234^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (634906159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4408999 + ... + 4409142.

Almost surely, 2^634906152 is an apocalyptic number.

It is an amenable number.

634906152 is an abundant number, since it is smaller than the sum of its proper divisors (1084631538).

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

634906152 is a wasteful number, since it uses less digits than its factorization.

634906152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8818153 (or 8818146 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 634906152 is about 25197.3441457627. The cubic root of 634906152 is about 859.4814577309.

The spelling of 634906152 in words is "six hundred thirty-four million, nine hundred six thousand, one hundred fifty-two".