623123612 has 6 divisors (see below), whose sum is σ = 1090466328. Its totient is φ = 311561804.

The previous prime is 623123581. The next prime is 623123629. The reversal of 623123612 is 216321326.

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, 77890448 + ... + 77890455.

It is an arithmetic number, because the mean of its divisors is an integer number (181744388).

Almost surely, 2^623123612 is an apocalyptic number.

It is an amenable number.

623123612 is a deficient number, since it is larger than the sum of its proper divisors (467342716).

623123612 is a wasteful number, since it uses less digits than its factorization.

623123612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155780907 (or 155780905 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 623123612 is about 24962.4440309838. Note that the first 3 decimals coincide. The cubic root of 623123612 is about 854.1314947606.

Adding to 623123612 its reverse (216321326), we get a palindrome (839444938).

The spelling of 623123612 in words is "six hundred twenty-three million, one hundred twenty-three thousand, six hundred twelve".