623261636 has 48 divisors (see below), whose sum is σ = 1206576000. Its totient is φ = 280380672.

The previous prime is 623261629. The next prime is 623261657. The reversal of 623261636 is 636162326.

It is a junction number, because it is equal to n+sod(n) for n = 623261596 and 623261605.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259256 + ... + 261648.

It is an arithmetic number, because the mean of its divisors is an integer number (25137000).

Almost surely, 2^623261636 is an apocalyptic number.

It is an amenable number.

623261636 is a deficient number, since it is larger than the sum of its proper divisors (583314364).

623261636 is a wasteful number, since it uses less digits than its factorization.

623261636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588 (or 2586 counting only the distinct ones).

The product of its digits is 46656, while the sum is 35.

The square root of 623261636 is about 24965.2085110459. The cubic root of 623261636 is about 854.1945544489.

The spelling of 623261636 in words is "six hundred twenty-three million, two hundred sixty-one thousand, six hundred thirty-six".