624081589 has 2 divisors, whose sum is σ = 624081590. Its totient is φ = 624081588.

The previous prime is 624081499. The next prime is 624081659. The reversal of 624081589 is 985180426.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 484440100 + 139641489 = 22010^2 + 11817^2 .

It is a cyclic number.

It is not a de Polignac number, because 624081589 - 2⁹ = 624081077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624081089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312040794 + 312040795.

It is an arithmetic number, because the mean of its divisors is an integer number (312040795).

Almost surely, 2^624081589 is an apocalyptic number.

It is an amenable number.

624081589 is a deficient number, since it is larger than the sum of its proper divisors (1).

624081589 is an equidigital number, since it uses as much as digits as its factorization.

624081589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 624081589 is about 24981.6250272075. The cubic root of 624081589 is about 854.5689785145.

The spelling of 624081589 in words is "six hundred twenty-four million, eighty-one thousand, five hundred eighty-nine".