722605923 has 12 divisors (see below), whose sum is σ = 1124053840. Its totient is φ = 444680496.

The previous prime is 722605901. The next prime is 722605931. The reversal of 722605923 is 329506227.

722605923 is a `hidden beast` number, since 7 + 2 + 2 + 60 + 592 + 3 = 666.

It is not a de Polignac number, because 722605923 - 2¹² = 722601827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722605943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3087943 + ... + 3088176.

Almost surely, 2^722605923 is an apocalyptic number.

722605923 is a deficient number, since it is larger than the sum of its proper divisors (401447917).

722605923 is a wasteful number, since it uses less digits than its factorization.

722605923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6176138 (or 6176135 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 722605923 is about 26881.3303800240. The cubic root of 722605923 is about 897.3609617977.

The spelling of 722605923 in words is "seven hundred twenty-two million, six hundred five thousand, nine hundred twenty-three".