623288564 has 12 divisors (see below), whose sum is σ = 1100408484. Its totient is φ = 308886144.

The previous prime is 623288563. The next prime is 623288621. The reversal of 623288564 is 465882326.

It can be written as a sum of positive squares in 2 ways, for example, as 106090000 + 517198564 = 10300^2 + 22742^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623288563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689027 + ... + 689930.

It is an arithmetic number, because the mean of its divisors is an integer number (91700707).

Almost surely, 2^623288564 is an apocalyptic number.

It is an amenable number.

623288564 is a deficient number, since it is larger than the sum of its proper divisors (477119920).

623288564 is a wasteful number, since it uses less digits than its factorization.

623288564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379074 (or 1379072 counting only the distinct ones).

The product of its digits is 552960, while the sum is 44.

The square root of 623288564 is about 24965.7478157575. The cubic root of 623288564 is about 854.2068560883.

The spelling of 623288564 in words is "six hundred twenty-three million, two hundred eighty-eight thousand, five hundred sixty-four".