77489613 has 12 divisors (see below), whose sum is σ = 113506848. Its totient is φ = 50931720.

The previous prime is 77489603. The next prime is 77489623. The reversal of 77489613 is 31698477.

It is an interprime number because it is at equal distance from previous prime (77489603) and next prime (77489623).

It is not a de Polignac number, because 77489613 - 2⁹ = 77489101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77489603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59995 + ... + 61272.

It is an arithmetic number, because the mean of its divisors is an integer number (9458904).

Almost surely, 2^77489613 is an apocalyptic number.

It is an amenable number.

77489613 is a deficient number, since it is larger than the sum of its proper divisors (36017235).

77489613 is a wasteful number, since it uses less digits than its factorization.

77489613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121344 (or 121341 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 77489613 is about 8802.8184691041. The cubic root of 77489613 is about 426.3319009698.

The spelling of 77489613 in words is "seventy-seven million, four hundred eighty-nine thousand, six hundred thirteen".