624406431 has 16 divisors (see below), whose sum is σ = 923119488. Its totient is φ = 372223200.

The previous prime is 624406423. The next prime is 624406439. The reversal of 624406431 is 134604426.

It is an interprime number because it is at equal distance from previous prime (624406423) and next prime (624406439).

It is not a de Polignac number, because 624406431 - 2³ = 624406423 is a prime.

It is a super-2 number, since 2×624406431² = 779766782148315522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624406439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153081 + ... + 157106.

It is an arithmetic number, because the mean of its divisors is an integer number (57694968).

Almost surely, 2^624406431 is an apocalyptic number.

624406431 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

624406431 is a deficient number, since it is larger than the sum of its proper divisors (298713057).

624406431 is a wasteful number, since it uses less digits than its factorization.

624406431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310262.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 624406431 is about 24988.1258000675. The cubic root of 624406431 is about 854.7172239524.

The spelling of 624406431 in words is "six hundred twenty-four million, four hundred six thousand, four hundred thirty-one".