623400516 has 24 divisors (see below), whose sum is σ = 1616223840. Its totient is φ = 207800136.

The previous prime is 623400497. The next prime is 623400521. The reversal of 623400516 is 615004326.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 623400516.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2886006 + ... + 2886221.

It is an arithmetic number, because the mean of its divisors is an integer number (67342660).

Almost surely, 2^623400516 is an apocalyptic number.

It is an amenable number.

623400516 is an abundant number, since it is smaller than the sum of its proper divisors (992823324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623400516 is a wasteful number, since it uses less digits than its factorization.

623400516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772240 (or 5772232 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 623400516 is about 24967.9898269765. The cubic root of 623400516 is about 854.2579958259.

The spelling of 623400516 in words is "six hundred twenty-three million, four hundred thousand, five hundred sixteen".