722671161 has 16 divisors (see below), whose sum is σ = 990734784. Its totient is φ = 468224064.

The previous prime is 722671141. The next prime is 722671171. The reversal of 722671161 is 161176227.

It is not a de Polignac number, because 722671161 - 2⁵ = 722671129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (722671121) 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, 109230 + ... + 115656.

It is an arithmetic number, because the mean of its divisors is an integer number (61920924).

Almost surely, 2^722671161 is an apocalyptic number.

It is an amenable number.

722671161 is a deficient number, since it is larger than the sum of its proper divisors (268063623).

722671161 is a wasteful number, since it uses less digits than its factorization.

722671161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7480.

The product of its digits is 7056, while the sum is 33.

The square root of 722671161 is about 26882.5437970442. The cubic root of 722671161 is about 897.3879660384.

It can be divided in two parts, 7226 and 71161, that added together give a palindrome (78387).

The spelling of 722671161 in words is "seven hundred twenty-two million, six hundred seventy-one thousand, one hundred sixty-one".