624484561 has 2 divisors, whose sum is σ = 624484562. Its totient is φ = 624484560.

The previous prime is 624484543. The next prime is 624484583. The reversal of 624484561 is 165484426.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471714961 + 152769600 = 21719^2 + 12360^2 .

It is a cyclic number.

It is not a de Polignac number, because 624484561 - 2¹⁷ = 624353489 is a prime.

It is not a weakly prime, because it can be changed into another prime (624484061) 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, 312242280 + 312242281.

It is an arithmetic number, because the mean of its divisors is an integer number (312242281).

Almost surely, 2^624484561 is an apocalyptic number.

It is an amenable number.

624484561 is a deficient number, since it is larger than the sum of its proper divisors (1).

624484561 is an equidigital number, since it uses as much as digits as its factorization.

624484561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 40.

The square root of 624484561 is about 24989.6890937042. The cubic root of 624484561 is about 854.7528718190.

The spelling of 624484561 in words is "six hundred twenty-four million, four hundred eighty-four thousand, five hundred sixty-one".