623918361 has 32 divisors (see below), whose sum is σ = 937230336. Its totient is φ = 365904000.

The previous prime is 623918359. The next prime is 623918363. The reversal of 623918361 is 163819326.

It is an interprime number because it is at equal distance from previous prime (623918359) and next prime (623918363).

It is not a de Polignac number, because 623918361 - 2¹ = 623918359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (623918363) 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 31 ways as a sum of consecutive naturals, for example, 170016 + ... + 173646.

It is an arithmetic number, because the mean of its divisors is an integer number (29288448).

Almost surely, 2^623918361 is an apocalyptic number.

It is an amenable number.

623918361 is a deficient number, since it is larger than the sum of its proper divisors (313311975).

623918361 is a wasteful number, since it uses less digits than its factorization.

623918361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3813.

The product of its digits is 46656, while the sum is 39.

The square root of 623918361 is about 24978.3578523489. The cubic root of 623918361 is about 854.4944680922.

The spelling of 623918361 in words is "six hundred twenty-three million, nine hundred eighteen thousand, three hundred sixty-one".