722865730 has 8 divisors (see below), whose sum is σ = 1301158332. Its totient is φ = 289146288.

The previous prime is 722865713. The next prime is 722865739. The reversal of 722865730 is 37568227.

It can be written as a sum of positive squares in 2 ways, for example, as 683665609 + 39200121 = 26147^2 + 6261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (722865739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36143277 + ... + 36143296.

Almost surely, 2^722865730 is an apocalyptic number.

722865730 is a deficient number, since it is larger than the sum of its proper divisors (578292602).

722865730 is a wasteful number, since it uses less digits than its factorization.

722865730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72286580.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 722865730 is about 26886.1624260511. The cubic root of 722865730 is about 897.4684951555.

The spelling of 722865730 in words is "seven hundred twenty-two million, eight hundred sixty-five thousand, seven hundred thirty".