634368655 has 8 divisors (see below), whose sum is σ = 785798784. Its totient is φ = 491124000.

The previous prime is 634368641. The next prime is 634368673. The reversal of 634368655 is 556863436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-634368655 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2046196 + ... + 2046505.

It is an arithmetic number, because the mean of its divisors is an integer number (98224848).

Almost surely, 2^634368655 is an apocalyptic number.

634368655 is a deficient number, since it is larger than the sum of its proper divisors (151430129).

634368655 is a wasteful number, since it uses less digits than its factorization.

634368655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092737.

The product of its digits is 1555200, while the sum is 46.

The square root of 634368655 is about 25186.6761403723. The cubic root of 634368655 is about 859.2388501534.

The spelling of 634368655 in words is "six hundred thirty-four million, three hundred sixty-eight thousand, six hundred fifty-five".