634511426 has 8 divisors (see below), whose sum is σ = 951896124. Its totient is φ = 317212720.

The previous prime is 634511411. The next prime is 634511453. The reversal of 634511426 is 624115436.

It can be written as a sum of positive squares in 2 ways, for example, as 583174201 + 51337225 = 24149^2 + 7165^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 634511392 and 634511401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2156 + ... + 35688.

Almost surely, 2^634511426 is an apocalyptic number.

634511426 is a deficient number, since it is larger than the sum of its proper divisors (317384698).

634511426 is a wasteful number, since it uses less digits than its factorization.

634511426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42996.

The product of its digits is 17280, while the sum is 32.

The square root of 634511426 is about 25189.5102373984. The cubic root of 634511426 is about 859.3033054124.

It can be divided in two parts, 6345 and 11426, that added together give a palindrome (17771).

The spelling of 634511426 in words is "six hundred thirty-four million, five hundred eleven thousand, four hundred twenty-six".