634402723 has 4 divisors (see below), whose sum is σ = 667792360. Its totient is φ = 601013088.

The previous prime is 634402711. The next prime is 634402729. The reversal of 634402723 is 327204436.

634402723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 634402723 - 2¹³ = 634394531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634402729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16694790 + ... + 16694827.

It is an arithmetic number, because the mean of its divisors is an integer number (166948090).

Almost surely, 2^634402723 is an apocalyptic number.

634402723 is a deficient number, since it is larger than the sum of its proper divisors (33389637).

634402723 is a wasteful number, since it uses less digits than its factorization.

634402723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33389636.

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 634402723 is about 25187.3524412551. The cubic root of 634402723 is about 859.2542313385.

The spelling of 634402723 in words is "six hundred thirty-four million, four hundred two thousand, seven hundred twenty-three".