76989591 has 12 divisors (see below), whose sum is σ = 127094032. Its totient is φ = 43994016.

The previous prime is 76989569. The next prime is 76989611. The reversal of 76989591 is 19598967.

It is not a de Polignac number, because 76989591 - 2¹⁴ = 76973207 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 (76989541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610966 + ... + 611091.

Almost surely, 2^76989591 is an apocalyptic number.

76989591 is a deficient number, since it is larger than the sum of its proper divisors (50104441).

76989591 is a wasteful number, since it uses less digits than its factorization.

76989591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222070 (or 1222067 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 76989591 is about 8774.3712595262. The cubic root of 76989591 is about 425.4129154200.

The spelling of 76989591 in words is "seventy-six million, nine hundred eighty-nine thousand, five hundred ninety-one".