722995623 has 24 divisors (see below), whose sum is σ = 1194569376. Its totient is φ = 412776000.

The previous prime is 722995621. The next prime is 722995649. The reversal of 722995623 is 326599227.

It is a happy number.

It is not a de Polignac number, because 722995623 - 2¹ = 722995621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722995621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77553 + ... + 86373.

It is an arithmetic number, because the mean of its divisors is an integer number (49773724).

Almost surely, 2^722995623 is an apocalyptic number.

722995623 is a deficient number, since it is larger than the sum of its proper divisors (471573753).

722995623 is a wasteful number, since it uses less digits than its factorization.

722995623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10135 (or 10132 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 722995623 is about 26888.5779281836. The cubic root of 722995623 is about 897.5222478275.

The spelling of 722995623 in words is "seven hundred twenty-two million, nine hundred ninety-five thousand, six hundred twenty-three".