722612385 has 24 divisors (see below), whose sum is σ = 1366395264. Its totient is φ = 350357280.

The previous prime is 722612329. The next prime is 722612411. The reversal of 722612385 is 583216227.

722612385 is a `hidden beast` number, since 7 + 2 + 2 + 612 + 38 + 5 = 666.

It is not a de Polignac number, because 722612385 - 2¹⁶ = 722546849 is a prime.

It is a Curzon number.

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 in 23 ways as a sum of consecutive naturals, for example, 729417 + ... + 730406.

It is an arithmetic number, because the mean of its divisors is an integer number (56933136).

Almost surely, 2^722612385 is an apocalyptic number.

It is an amenable number.

722612385 is a deficient number, since it is larger than the sum of its proper divisors (643782879).

722612385 is a wasteful number, since it uses less digits than its factorization.

722612385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459845 (or 1459842 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 722612385 is about 26881.4505746993. The cubic root of 722612385 is about 897.3636367132.

The spelling of 722612385 in words is "seven hundred twenty-two million, six hundred twelve thousand, three hundred eighty-five".