623494536 has 64 divisors (see below), whose sum is σ = 1811635200. Its totient is φ = 175119168.

The previous prime is 623494517. The next prime is 623494561. The reversal of 623494536 is 635494326.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21540 + ... + 41363.

It is an arithmetic number, because the mean of its divisors is an integer number (28306800).

Almost surely, 2^623494536 is an apocalyptic number.

It is an amenable number.

623494536 is an abundant number, since it is smaller than the sum of its proper divisors (1188140664).

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

623494536 is a wasteful number, since it uses less digits than its factorization.

623494536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62978 (or 62974 counting only the distinct ones).

The product of its digits is 466560, while the sum is 42.

The square root of 623494536 is about 24969.8725667553. The cubic root of 623494536 is about 854.3009394859.

The spelling of 623494536 in words is "six hundred twenty-three million, four hundred ninety-four thousand, five hundred thirty-six".