623680562 has 6 divisors (see below), whose sum is σ = 935573823. Its totient is φ = 311822622.

The previous prime is 623680559. The next prime is 623680573. The reversal of 623680562 is 265086326.

It can be written as a sum of positive squares in only one way, i.e., 311840281 + 311840281 = 17659^2 + 17659^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=17659.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 26489 + ... + 44147.

Almost surely, 2^623680562 is an apocalyptic number.

623680562 is a deficient number, since it is larger than the sum of its proper divisors (311893261).

623680562 is an frugal number, since it uses more digits than its factorization.

623680562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35320 (or 17661 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 623680562 is about 24973.5972979465. The cubic root of 623680562 is about 854.3858941913.

The spelling of 623680562 in words is "six hundred twenty-three million, six hundred eighty thousand, five hundred sixty-two".