76722289 has 12 divisors (see below), whose sum is σ = 89825844. Its totient is φ = 65336544.

The previous prime is 76722287. The next prime is 76722293. The reversal of 76722289 is 98222767.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15366400 + 61355889 = 3920^2 + 7833^2 .

It is not a de Polignac number, because 76722289 - 2¹ = 76722287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76722281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2707 + ... + 12679.

It is an arithmetic number, because the mean of its divisors is an integer number (7485487).

Almost surely, 2^76722289 is an apocalyptic number.

It is an amenable number.

76722289 is a deficient number, since it is larger than the sum of its proper divisors (13103555).

76722289 is a wasteful number, since it uses less digits than its factorization.

76722289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10144 (or 10137 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 76722289 is about 8759.1260408787. The cubic root of 76722289 is about 424.9200107824.

The spelling of 76722289 in words is "seventy-six million, seven hundred twenty-two thousand, two hundred eighty-nine".