634400701 has 6 divisors (see below), whose sum is σ = 697316606. Its totient is φ = 576727800.

The previous prime is 634400693. The next prime is 634400707. The reversal of 634400701 is 107004436.

It can be written as a sum of positive squares in only one way, i.e., 607671801 + 26728900 = 24651^2 + 5170^2 .

It is not a de Polignac number, because 634400701 - 2³ = 634400693 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 (634400707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2621370 + ... + 2621611.

Almost surely, 2^634400701 is an apocalyptic number.

It is an amenable number.

634400701 is a deficient number, since it is larger than the sum of its proper divisors (62915905).

634400701 is a wasteful number, since it uses less digits than its factorization.

634400701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243003 (or 5242992 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 634400701 is about 25187.3123020302. The cubic root of 634400701 is about 859.2533184515.

The spelling of 634400701 in words is "six hundred thirty-four million, four hundred thousand, seven hundred one".