722736767 has 4 divisors (see below), whose sum is σ = 723485136. Its totient is φ = 721988400.

The previous prime is 722736713. The next prime is 722736803. The reversal of 722736767 is 767637227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-722736767 is a prime.

It is a super-2 number, since 2×722736767² = 1044696868747224578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722736167) 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, 372734 + ... + 374667.

It is an arithmetic number, because the mean of its divisors is an integer number (180871284).

Almost surely, 2^722736767 is an apocalyptic number.

722736767 is a deficient number, since it is larger than the sum of its proper divisors (748369).

722736767 is an equidigital number, since it uses as much as digits as its factorization.

722736767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748368.

The product of its digits is 1037232, while the sum is 47.

The square root of 722736767 is about 26883.7640035766. The cubic root of 722736767 is about 897.4151209680.

The spelling of 722736767 in words is "seven hundred twenty-two million, seven hundred thirty-six thousand, seven hundred sixty-seven".