722202605 has 4 divisors (see below), whose sum is σ = 866643132. Its totient is φ = 577762080.

The previous prime is 722202601. The next prime is 722202617. The reversal of 722202605 is 506202227.

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

It can be written as a sum of positive squares in 2 ways, for example, as 557054404 + 165148201 = 23602^2 + 12851^2 .

It is not a de Polignac number, because 722202605 - 2² = 722202601 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722202601) 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, 72220256 + ... + 72220265.

It is an arithmetic number, because the mean of its divisors is an integer number (216660783).

Almost surely, 2^722202605 is an apocalyptic number.

It is an amenable number.

722202605 is a deficient number, since it is larger than the sum of its proper divisors (144440527).

722202605 is a wasteful number, since it uses less digits than its factorization.

722202605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144440526.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 722202605 is about 26873.8275093073. The cubic root of 722202605 is about 897.1939785811.

The spelling of 722202605 in words is "seven hundred twenty-two million, two hundred two thousand, six hundred five".