634645455 has 16 divisors (see below), whose sum is σ = 1016201184. Its totient is φ = 338221440.

The previous prime is 634645439. The next prime is 634645469. The reversal of 634645455 is 554546436.

It is not a de Polignac number, because 634645455 - 2⁴ = 634645439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5397 + ... + 36033.

It is an arithmetic number, because the mean of its divisors is an integer number (63512574).

Almost surely, 2^634645455 is an apocalyptic number.

634645455 is a deficient number, since it is larger than the sum of its proper divisors (381555729).

634645455 is a wasteful number, since it uses less digits than its factorization.

634645455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32026.

The product of its digits is 864000, while the sum is 42.

The square root of 634645455 is about 25192.1705099025. The cubic root of 634645455 is about 859.3638052184.

The spelling of 634645455 in words is "six hundred thirty-four million, six hundred forty-five thousand, four hundred fifty-five".