77886377 has 4 divisors (see below), whose sum is σ = 81985680. Its totient is φ = 73787076.

The previous prime is 77886359. The next prime is 77886407. The reversal of 77886377 is 77368877.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77886377 - 2²⁰ = 76837801 is a prime.

It is a super-2 number, since 2×77886377² = 12132575444372258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77886307) 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 3 ways as a sum of consecutive naturals, for example, 2049623 + ... + 2049660.

It is an arithmetic number, because the mean of its divisors is an integer number (20496420).

Almost surely, 2^77886377 is an apocalyptic number.

It is an amenable number.

77886377 is a deficient number, since it is larger than the sum of its proper divisors (4099303).

77886377 is a wasteful number, since it uses less digits than its factorization.

77886377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099302.

The product of its digits is 2765952, while the sum is 53.

The square root of 77886377 is about 8825.3258863342. The cubic root of 77886377 is about 427.0583005551.

The spelling of 77886377 in words is "seventy-seven million, eight hundred eighty-six thousand, three hundred seventy-seven".