634749739 has 16 divisors (see below), whose sum is σ = 720455680. Its totient is φ = 554389920.

The previous prime is 634749733. The next prime is 634749743. The reversal of 634749739 is 937947436.

634749739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 634749739 - 2⁷ = 634749611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (634749733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362464 + ... + 364210.

It is an arithmetic number, because the mean of its divisors is an integer number (45028480).

Almost surely, 2^634749739 is an apocalyptic number.

634749739 is a deficient number, since it is larger than the sum of its proper divisors (85705941).

634749739 is a wasteful number, since it uses less digits than its factorization.

634749739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3250.

The product of its digits is 3429216, while the sum is 52.

The square root of 634749739 is about 25194.2401949334. The cubic root of 634749739 is about 859.4108724358.

The spelling of 634749739 in words is "six hundred thirty-four million, seven hundred forty-nine thousand, seven hundred thirty-nine".