634936693627 has 4 divisors (see below), whose sum is σ = 636296301576. Its totient is φ = 633577085680.

The previous prime is 634936693619. The next prime is 634936693639. The reversal of 634936693627 is 726396639436.

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 634936693627 - 2³ = 634936693619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (634936693687) 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, 679803274 + ... + 679804207.

It is an arithmetic number, because the mean of its divisors is an integer number (159074075394).

Almost surely, 2^634936693627 is an apocalyptic number.

634936693627 is a deficient number, since it is larger than the sum of its proper divisors (1359607949).

634936693627 is a wasteful number, since it uses less digits than its factorization.

634936693627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359607948.

The product of its digits is 158723712, while the sum is 64.

The spelling of 634936693627 in words is "six hundred thirty-four billion, nine hundred thirty-six million, six hundred ninety-three thousand, six hundred twenty-seven".