722165946 has 64 divisors (see below), whose sum is σ = 1599004800. Its totient is φ = 216518400.

The previous prime is 722165911. The next prime is 722165953. The reversal of 722165946 is 649561227.

It is a junction number, because it is equal to n+sod(n) for n = 722165898 and 722165907.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199876 + ... + 203456.

It is an arithmetic number, because the mean of its divisors is an integer number (24984450).

Almost surely, 2^722165946 is an apocalyptic number.

722165946 is an abundant number, since it is smaller than the sum of its proper divisors (876838854).

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

722165946 is a wasteful number, since it uses less digits than its factorization.

722165946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695.

The product of its digits is 181440, while the sum is 42.

The square root of 722165946 is about 26873.1454429882. The cubic root of 722165946 is about 897.1787978039.

The spelling of 722165946 in words is "seven hundred twenty-two million, one hundred sixty-five thousand, nine hundred forty-six".