77568086 has 4 divisors (see below), whose sum is σ = 116352132. Its totient is φ = 38784042.

The previous prime is 77568079. The next prime is 77568103. The reversal of 77568086 is 68086577.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 77568086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19392020 + ... + 19392023.

It is an arithmetic number, because the mean of its divisors is an integer number (29088033).

Almost surely, 2^77568086 is an apocalyptic number.

77568086 is a deficient number, since it is larger than the sum of its proper divisors (38784046).

77568086 is a wasteful number, since it uses less digits than its factorization.

77568086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38784045.

The product of its (nonzero) digits is 564480, while the sum is 47.

The square root of 77568086 is about 8807.2746068236. The cubic root of 77568086 is about 426.4757665149.

The spelling of 77568086 in words is "seventy-seven million, five hundred sixty-eight thousand, eighty-six".