623664277406 has 16 divisors (see below), whose sum is σ = 940566850080. Its totient is φ = 310146520320.

The previous prime is 623664277403. The next prime is 623664277421. The reversal of 623664277406 is 604772466326.

It is a happy number.

623664277406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623664277403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 855530 + ... + 1406861.

It is an arithmetic number, because the mean of its divisors is an integer number (58785428130).

Almost surely, 2^623664277406 is an apocalyptic number.

623664277406 is a deficient number, since it is larger than the sum of its proper divisors (316902572674).

623664277406 is a wasteful number, since it uses less digits than its factorization.

623664277406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2263139.

The product of its (nonzero) digits is 12192768, while the sum is 53.

The spelling of 623664277406 in words is "six hundred twenty-three billion, six hundred sixty-four million, two hundred seventy-seven thousand, four hundred six".