623994974 has 16 divisors (see below), whose sum is σ = 953227440. Its totient is φ = 306267840.

The previous prime is 623994901. The next prime is 623994977. The reversal of 623994974 is 479499326.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623994977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87794 + ... + 94634.

It is an arithmetic number, because the mean of its divisors is an integer number (59576715).

Almost surely, 2^623994974 is an apocalyptic number.

623994974 is a deficient number, since it is larger than the sum of its proper divisors (329232466).

623994974 is a wasteful number, since it uses less digits than its factorization.

623994974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7675.

The product of its digits is 2939328, while the sum is 53.

The square root of 623994974 is about 24979.8913928784. The cubic root of 623994974 is about 854.5294420618.

The spelling of 623994974 in words is "six hundred twenty-three million, nine hundred ninety-four thousand, nine hundred seventy-four".