623411626 has 4 divisors (see below), whose sum is σ = 935117442. Its totient is φ = 311705812.

The previous prime is 623411609. The next prime is 623411627. The reversal of 623411626 is 626114326.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 527391225 + 96020401 = 22965^2 + 9799^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (623411627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155852905 + ... + 155852908.

Almost surely, 2^623411626 is an apocalyptic number.

623411626 is a deficient number, since it is larger than the sum of its proper divisors (311705816).

623411626 is a wasteful number, since it uses less digits than its factorization.

623411626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311705815.

The product of its digits is 10368, while the sum is 31.

The square root of 623411626 is about 24968.2123108564. The cubic root of 623411626 is about 854.2630705463.

The spelling of 623411626 in words is "six hundred twenty-three million, four hundred eleven thousand, six hundred twenty-six".