624610561 has 8 divisors (see below), whose sum is σ = 642970944. Its totient is φ = 606424560.

The previous prime is 624610559. The next prime is 624610601. The reversal of 624610561 is 165016426.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 624610561 - 2¹ = 624610559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (624610531) 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 in 7 ways as a sum of consecutive naturals, for example, 36310 + ... + 50671.

It is an arithmetic number, because the mean of its divisors is an integer number (80371368).

Almost surely, 2^624610561 is an apocalyptic number.

It is an amenable number.

624610561 is a deficient number, since it is larger than the sum of its proper divisors (18360383).

624610561 is a wasteful number, since it uses less digits than its factorization.

624610561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87191.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 624610561 is about 24992.2100063200. The cubic root of 624610561 is about 854.8103547557.

Adding to 624610561 its reverse (165016426), we get a palindrome (789626987).

It can be divided in two parts, 6246 and 10561, that added together give a 5-th power (16807 = 7⁵).

The spelling of 624610561 in words is "six hundred twenty-four million, six hundred ten thousand, five hundred sixty-one".