623914820 has 12 divisors (see below), whose sum is σ = 1310221164. Its totient is φ = 249565920.

The previous prime is 623914817. The next prime is 623914849. The reversal of 623914820 is 28419326.

It can be written as a sum of positive squares in 2 ways, for example, as 232745536 + 391169284 = 15256^2 + 19778^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15597851 + ... + 15597890.

It is an arithmetic number, because the mean of its divisors is an integer number (109185097).

Almost surely, 2^623914820 is an apocalyptic number.

It is an amenable number.

623914820 is an abundant number, since it is smaller than the sum of its proper divisors (686306344).

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

623914820 is a wasteful number, since it uses less digits than its factorization.

623914820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31195750 (or 31195748 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 623914820 is about 24978.2869708873. The cubic root of 623914820 is about 854.4928515503.

The spelling of 623914820 in words is "six hundred twenty-three million, nine hundred fourteen thousand, eight hundred twenty".