623626004 has 6 divisors (see below), whose sum is σ = 1091345514. Its totient is φ = 311813000.

The previous prime is 623625991. The next prime is 623626019. The reversal of 623626004 is 400626326.

It can be written as a sum of positive squares in only one way, i.e., 462336004 + 161290000 = 21502^2 + 12700^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77953247 + ... + 77953254.

It is an arithmetic number, because the mean of its divisors is an integer number (181890919).

Almost surely, 2^623626004 is an apocalyptic number.

It is an amenable number.

623626004 is a deficient number, since it is larger than the sum of its proper divisors (467719510).

623626004 is a wasteful number, since it uses less digits than its factorization.

623626004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155906505 (or 155906503 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 623626004 is about 24972.5049604560. The cubic root of 623626004 is about 854.3609802916.

The spelling of 623626004 in words is "six hundred twenty-three million, six hundred twenty-six thousand, four".