623706764 has 6 divisors (see below), whose sum is σ = 1091486844. Its totient is φ = 311853380.

The previous prime is 623706739. The next prime is 623706767. The reversal of 623706764 is 467607326.

It is not an unprimeable number, because it can be changed into a prime (623706767) 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, 77963342 + ... + 77963349.

It is an arithmetic number, because the mean of its divisors is an integer number (181914474).

Almost surely, 2^623706764 is an apocalyptic number.

It is an amenable number.

623706764 is a deficient number, since it is larger than the sum of its proper divisors (467780080).

623706764 is a wasteful number, since it uses less digits than its factorization.

623706764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155926695 (or 155926693 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 41.

The square root of 623706764 is about 24974.1218864648. The cubic root of 623706764 is about 854.3978588128.

The spelling of 623706764 in words is "six hundred twenty-three million, seven hundred six thousand, seven hundred sixty-four".