77890629 has 8 divisors (see below), whose sum is σ = 103902912. Its totient is φ = 51902720.

The previous prime is 77890619. The next prime is 77890639. The reversal of 77890629 is 92609877.

It is an interprime number because it is at equal distance from previous prime (77890619) and next prime (77890639).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77890629 - 2²⁰ = 76842053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77890619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3544 + ... + 12974.

It is an arithmetic number, because the mean of its divisors is an integer number (12987864).

Almost surely, 2^77890629 is an apocalyptic number.

It is an amenable number.

77890629 is a deficient number, since it is larger than the sum of its proper divisors (26012283).

77890629 is a wasteful number, since it uses less digits than its factorization.

77890629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12187.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 77890629 is about 8825.5667806663. The cubic root of 77890629 is about 427.0660717851.

The spelling of 77890629 in words is "seventy-seven million, eight hundred ninety thousand, six hundred twenty-nine".