624431477 has 2 divisors, whose sum is σ = 624431478. Its totient is φ = 624431476.

The previous prime is 624431459. The next prime is 624431503. The reversal of 624431477 is 774134426.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 449821681 + 174609796 = 21209^2 + 13214^2 .

It is a cyclic number.

It is not a de Polignac number, because 624431477 - 2⁶ = 624431413 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 624431477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624431407) 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 as a sum of consecutive naturals, namely, 312215738 + 312215739.

It is an arithmetic number, because the mean of its divisors is an integer number (312215739).

Almost surely, 2^624431477 is an apocalyptic number.

It is an amenable number.

624431477 is a deficient number, since it is larger than the sum of its proper divisors (1).

624431477 is an equidigital number, since it uses as much as digits as its factorization.

624431477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 38.

The square root of 624431477 is about 24988.6269530761. The cubic root of 624431477 is about 854.7286518516.

The spelling of 624431477 in words is "six hundred twenty-four million, four hundred thirty-one thousand, four hundred seventy-seven".