76649589 has 6 divisors (see below), whose sum is σ = 110716086. Its totient is φ = 51099720.

The previous prime is 76649579. The next prime is 76649659. The reversal of 76649589 is 98594667.

76649589 is a `hidden beast` number, since 76 + 6 + 495 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43125489 + 33524100 = 6567^2 + 5790^2 .

It is not a de Polignac number, because 76649589 - 2¹⁵ = 76616821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76649539) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4258302 + ... + 4258319.

It is an arithmetic number, because the mean of its divisors is an integer number (18452681).

Almost surely, 2^76649589 is an apocalyptic number.

It is an amenable number.

76649589 is a deficient number, since it is larger than the sum of its proper divisors (34066497).

76649589 is a wasteful number, since it uses less digits than its factorization.

76649589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8516627 (or 8516624 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 76649589 is about 8754.9750999075. The cubic root of 76649589 is about 424.7857540681.

The spelling of 76649589 in words is "seventy-six million, six hundred forty-nine thousand, five hundred eighty-nine".