723065920 has 28 divisors (see below), whose sum is σ = 1721801484. Its totient is φ = 289226240.

The previous prime is 723065899. The next prime is 723065921. The reversal of 723065920 is 29560327.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 210134016 + 512931904 = 14496^2 + 22648^2 .

It is a super-4 number, since 4×723065920⁴ (a number of 37 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (723065921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1129471 + ... + 1130110.

Almost surely, 2^723065920 is an apocalyptic number.

It is an amenable number.

723065920 is an abundant number, since it is smaller than the sum of its proper divisors (998735564).

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

723065920 is a wasteful number, since it uses less digits than its factorization.

723065920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259598 (or 2259588 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 723065920 is about 26889.8850871475. The cubic root of 723065920 is about 897.5513356369.

The spelling of 723065920 in words is "seven hundred twenty-three million, sixty-five thousand, nine hundred twenty".