623588940 has 72 divisors (see below), whose sum is σ = 2037064848. Its totient is φ = 153498240.

The previous prime is 623588939. The next prime is 623588969. The reversal of 623588940 is 49885326.

623588940 is a `hidden beast` number, since 6 + 23 + 588 + 9 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130906 + ... + 135585.

Almost surely, 2^623588940 is an apocalyptic number.

623588940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

623588940 is an abundant number, since it is smaller than the sum of its proper divisors (1413475908).

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

623588940 is a wasteful number, since it uses less digits than its factorization.

623588940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266519 (or 266514 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 623588940 is about 24971.7628532709. The cubic root of 623588940 is about 854.3440541946.

The spelling of 623588940 in words is "six hundred twenty-three million, five hundred eighty-eight thousand, nine hundred forty".