634626436 has 12 divisors (see below), whose sum is σ = 1111113612. Its totient is φ = 317165408.

The previous prime is 634626407. The next prime is 634626437.

634626436 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 431392900 + 203233536 = 20770^2 + 14256^2 .

It is not an unprimeable number, because it can be changed into a prime (634626437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26995 + ... + 44698.

It is an arithmetic number, because the mean of its divisors is an integer number (92592801).

Almost surely, 2^634626436 is an apocalyptic number.

It is an amenable number.

634626436 is a deficient number, since it is larger than the sum of its proper divisors (476487176).

634626436 is a wasteful number, since it uses less digits than its factorization.

634626436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73910 (or 73908 counting only the distinct ones).

The product of its digits is 373248, while the sum is 40.

The square root of 634626436 is about 25191.7930286830. The cubic root of 634626436 is about 859.3552206859.

The spelling of 634626436 in words is "six hundred thirty-four million, six hundred twenty-six thousand, four hundred thirty-six".