722325690 has 48 divisors (see below), whose sum is σ = 1883169288. Its totient is φ = 192094848.

The previous prime is 722325683. The next prime is 722325697. The reversal of 722325690 is 96523227.

722325690 is a `hidden beast` number, since 72 + 23 + 2 + 569 + 0 = 666.

722325690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (722325683) and next prime (722325697).

It can be written as a sum of positive squares in 4 ways, for example, as 546577641 + 175748049 = 23379^2 + 13257^2 .

It is a super-2 number, since 2×722325690² = 1043508804867952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (722325697) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22812 + ... + 44328.

Almost surely, 2^722325690 is an apocalyptic number.

722325690 is an abundant number, since it is smaller than the sum of its proper divisors (1160843598).

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

722325690 is a wasteful number, since it uses less digits than its factorization.

722325690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21903 (or 21900 counting only the distinct ones).

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

The square root of 722325690 is about 26876.1174651399. The cubic root of 722325690 is about 897.2449452799.

The spelling of 722325690 in words is "seven hundred twenty-two million, three hundred twenty-five thousand, six hundred ninety".