722265642 has 48 divisors (see below), whose sum is σ = 1866234240. Its totient is φ = 197388576.

The previous prime is 722265629. The next prime is 722265653. The reversal of 722265642 is 246562227.

722265642 is a `hidden beast` number, since 7 + 2 + 2 + 2 + 6 + 5 + 642 = 666.

It is a super-2 number, since 2×722265642² = 1043335315227344328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 722265597 and 722265606.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121717 + ... + 127512.

It is an arithmetic number, because the mean of its divisors is an integer number (38879880).

Almost surely, 2^722265642 is an apocalyptic number.

722265642 is an abundant number, since it is smaller than the sum of its proper divisors (1143968598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722265642 is a wasteful number, since it uses less digits than its factorization.

722265642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249267 (or 249264 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 722265642 is about 26875.0003162791. Note that the first 3 decimals coincide. The cubic root of 722265642 is about 897.2200814923.

The spelling of 722265642 in words is "seven hundred twenty-two million, two hundred sixty-five thousand, six hundred forty-two".