624431457 has 16 divisors (see below), whose sum is σ = 996244480. Its totient is φ = 384265296.

The previous prime is 624431413. The next prime is 624431459. The reversal of 624431457 is 754134426.

It is not a de Polignac number, because 624431457 - 2⁸ = 624431201 is a prime.

It is a super-2 number, since 2×624431457² = 779829288982285698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (624431459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 889153 + ... + 889854.

It is an arithmetic number, because the mean of its divisors is an integer number (62265280).

Almost surely, 2^624431457 is an apocalyptic number.

It is an amenable number.

624431457 is a deficient number, since it is larger than the sum of its proper divisors (371813023).

624431457 is a wasteful number, since it uses less digits than its factorization.

624431457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779029 (or 1779023 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 624431457 is about 24988.6265528940. The cubic root of 624431457 is about 854.7286427262.

The spelling of 624431457 in words is "six hundred twenty-four million, four hundred thirty-one thousand, four hundred fifty-seven".