623423156 has 12 divisors (see below), whose sum is σ = 1101583392. Its totient is φ = 308685048.

The previous prime is 623423149. The next prime is 623423173. The reversal of 623423156 is 651324326.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756170 + ... + 756993.

It is an arithmetic number, because the mean of its divisors is an integer number (91798616).

Almost surely, 2^623423156 is an apocalyptic number.

It is an amenable number.

623423156 is a deficient number, since it is larger than the sum of its proper divisors (478160236).

623423156 is a wasteful number, since it uses less digits than its factorization.

623423156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513270 (or 1513268 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 623423156 is about 24968.4432033717. The cubic root of 623423156 is about 854.2683370466.

The spelling of 623423156 in words is "six hundred twenty-three million, four hundred twenty-three thousand, one hundred fifty-six".