623988464 has 40 divisors (see below), whose sum is σ = 1320986880. Its totient is φ = 283179200.

The previous prime is 623988433. The next prime is 623988467. The reversal of 623988464 is 464889326.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623988467) 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, 124079 + ... + 129009.

It is an arithmetic number, because the mean of its divisors is an integer number (33024672).

Almost surely, 2^623988464 is an apocalyptic number.

It is an amenable number.

623988464 is an abundant number, since it is smaller than the sum of its proper divisors (696998416).

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

623988464 is a wasteful number, since it uses less digits than its factorization.

623988464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669 (or 5663 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 50.

The square root of 623988464 is about 24979.7610877286. The cubic root of 623988464 is about 854.5264703466.

The spelling of 623988464 in words is "six hundred twenty-three million, nine hundred eighty-eight thousand, four hundred sixty-four".