634412405 has 16 divisors (see below), whose sum is σ = 831999168. Its totient is φ = 460560000.

The previous prime is 634412377. The next prime is 634412419. The reversal of 634412405 is 504214436.

It is not a de Polignac number, because 634412405 - 2¹⁸ = 634150261 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, 21305 + ... + 41505.

It is an arithmetic number, because the mean of its divisors is an integer number (51999948).

Almost surely, 2^634412405 is an apocalyptic number.

It is an amenable number.

634412405 is a deficient number, since it is larger than the sum of its proper divisors (197586763).

634412405 is a wasteful number, since it uses less digits than its factorization.

634412405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20788.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 634412405 is about 25187.5446401590. The cubic root of 634412405 is about 859.2586025141.

The spelling of 634412405 in words is "six hundred thirty-four million, four hundred twelve thousand, four hundred five".