634065957 has 24 divisors (see below), whose sum is σ = 1062341696. Its totient is φ = 356913216.

The previous prime is 634065953. The next prime is 634065959. The reversal of 634065957 is 759560436.

634065957 is a `hidden beast` number, since 634 + 0 + 6 + 5 + 9 + 5 + 7 = 666.

It is not a de Polignac number, because 634065957 - 2² = 634065953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634065953) 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 in 23 ways as a sum of consecutive naturals, for example, 70888 + ... + 79329.

Almost surely, 2^634065957 is an apocalyptic number.

634065957 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

634065957 is a deficient number, since it is larger than the sum of its proper divisors (428275739).

634065957 is a wasteful number, since it uses less digits than its factorization.

634065957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150297 (or 150294 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The square root of 634065957 is about 25180.6663335187. Note that the first 3 decimals coincide. The cubic root of 634065957 is about 859.1021624094.

The spelling of 634065957 in words is "six hundred thirty-four million, sixty-five thousand, nine hundred fifty-seven".