722671565 has 16 divisors (see below), whose sum is σ = 1081192320. Its totient is φ = 450496320.

The previous prime is 722671511. The next prime is 722671567. The reversal of 722671565 is 565176227.

It is not a de Polignac number, because 722671565 - 2⁶ = 722671501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722671567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 938150 + ... + 938919.

It is an arithmetic number, because the mean of its divisors is an integer number (67574520).

Almost surely, 2^722671565 is an apocalyptic number.

It is an amenable number.

722671565 is a deficient number, since it is larger than the sum of its proper divisors (358520755).

722671565 is a wasteful number, since it uses less digits than its factorization.

722671565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1877092.

The product of its digits is 176400, while the sum is 41.

The square root of 722671565 is about 26882.5513112130. The cubic root of 722671565 is about 897.3881332628.

The spelling of 722671565 in words is "seven hundred twenty-two million, six hundred seventy-one thousand, five hundred sixty-five".