623823964 has 6 divisors (see below), whose sum is σ = 1091691944. Its totient is φ = 311911980.

The previous prime is 623823961. The next prime is 623823973. The reversal of 623823964 is 469328326.

623823964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 623823964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623823961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77977992 + ... + 77977999.

Almost surely, 2^623823964 is an apocalyptic number.

It is an amenable number.

623823964 is a deficient number, since it is larger than the sum of its proper divisors (467867980).

623823964 is a wasteful number, since it uses less digits than its factorization.

623823964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155955995 (or 155955993 counting only the distinct ones).

The product of its digits is 373248, while the sum is 43.

The square root of 623823964 is about 24976.4682050926. The cubic root of 623823964 is about 854.4513717580.

The spelling of 623823964 in words is "six hundred twenty-three million, eight hundred twenty-three thousand, nine hundred sixty-four".