722554920 has 48 divisors (see below), whose sum is σ = 2348304660. Its totient is φ = 192681216.

The previous prime is 722554919. The next prime is 722554951. The reversal of 722554920 is 29455227.

It is a happy number.

722554920 is a `hidden beast` number, since 72 + 25 + 549 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 661621284 + 60933636 = 25722^2 + 7806^2 .

It is a super-2 number, since 2×722554920² = 1044171224832412800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1003189 + ... + 1003908.

Almost surely, 2^722554920 is an apocalyptic number.

It is an amenable number.

722554920 is an abundant number, since it is smaller than the sum of its proper divisors (1625749740).

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

722554920 is a wasteful number, since it uses less digits than its factorization.

722554920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007114 (or 2007107 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 722554920 is about 26880.3816937186. The cubic root of 722554920 is about 897.3398487786.

The spelling of 722554920 in words is "seven hundred twenty-two million, five hundred fifty-four thousand, nine hundred twenty".