623798064 has 40 divisors (see below), whose sum is σ = 1790532720. Its totient is φ = 207932544.

The previous prime is 623798023. The next prime is 623798099. The reversal of 623798064 is 460897326.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721557 + ... + 722420.

It is an arithmetic number, because the mean of its divisors is an integer number (44763318).

Almost surely, 2^623798064 is an apocalyptic number.

It is an amenable number.

623798064 is an abundant number, since it is smaller than the sum of its proper divisors (1166734656).

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

623798064 is a wasteful number, since it uses less digits than its factorization.

623798064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443994 (or 1443982 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 623798064 is about 24975.9497116726. The cubic root of 623798064 is about 854.4395465220.

The spelling of 623798064 in words is "six hundred twenty-three million, seven hundred ninety-eight thousand, sixty-four".