626430634 has 4 divisors (see below), whose sum is σ = 939645954. Its totient is φ = 313215316.

The previous prime is 626430619. The next prime is 626430641. The reversal of 626430634 is 436034626.

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

It can be written as a sum of positive squares in only one way, i.e., 580665409 + 45765225 = 24097^2 + 6765^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 626430634.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156607657 + ... + 156607660.

Almost surely, 2^626430634 is an apocalyptic number.

626430634 is a deficient number, since it is larger than the sum of its proper divisors (313215320).

626430634 is a wasteful number, since it uses less digits than its factorization.

626430634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313215319.

The product of its (nonzero) digits is 62208, while the sum is 34.

The square root of 626430634 is about 25028.5963250039. The cubic root of 626430634 is about 855.6398361442.

The spelling of 626430634 in words is "six hundred twenty-six million, four hundred thirty thousand, six hundred thirty-four".