623221264 has 10 divisors (see below), whose sum is σ = 1207491230. Its totient is φ = 311610624.

The previous prime is 623221253. The next prime is 623221327. The reversal of 623221264 is 462122326.

It can be written as a sum of positive squares in only one way, i.e., 620010000 + 3211264 = 24900^2 + 1792^2 .

It is an unprimeable number.

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, 19475649 + ... + 19475680.

It is an arithmetic number, because the mean of its divisors is an integer number (120749123).

Almost surely, 2^623221264 is an apocalyptic number.

It is an amenable number.

623221264 is a deficient number, since it is larger than the sum of its proper divisors (584269966).

623221264 is a wasteful number, since it uses less digits than its factorization.

623221264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38951337 (or 38951331 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 623221264 is about 24964.3999327042. The cubic root of 623221264 is about 854.1761104626.

The spelling of 623221264 in words is "six hundred twenty-three million, two hundred twenty-one thousand, two hundred sixty-four".