624890161 has 16 divisors (see below), whose sum is σ = 727953408. Its totient is φ = 525326400.

The previous prime is 624890159. The next prime is 624890179. The reversal of 624890161 is 161098426.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 624890161 - 2¹ = 624890159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 624890161.

It is not an unprimeable number, because it can be changed into a prime (624890141) 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, 161631 + ... + 165451.

It is an arithmetic number, because the mean of its divisors is an integer number (45497088).

Almost surely, 2^624890161 is an apocalyptic number.

624890161 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

624890161 is a deficient number, since it is larger than the sum of its proper divisors (103063247).

624890161 is a wasteful number, since it uses less digits than its factorization.

624890161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 624890161 is about 24997.8031234747. The cubic root of 624890161 is about 854.9378845245.

The spelling of 624890161 in words is "six hundred twenty-four million, eight hundred ninety thousand, one hundred sixty-one".