77085911 has 8 divisors (see below), whose sum is σ = 90479520. Its totient is φ = 64287648.

The previous prime is 77085893. The next prime is 77085913. The reversal of 77085911 is 11958077.

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

It is not a de Polignac number, because 77085911 - 2⁶ = 77085847 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 (77085913) 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, 148556 + ... + 149073.

It is an arithmetic number, because the mean of its divisors is an integer number (11309940).

Almost surely, 2^77085911 is an apocalyptic number.

77085911 is a deficient number, since it is larger than the sum of its proper divisors (13393609).

77085911 is a wasteful number, since it uses less digits than its factorization.

77085911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297673.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 77085911 is about 8779.8582562590. The cubic root of 77085911 is about 425.5902497643.

The spelling of 77085911 in words is "seventy-seven million, eighty-five thousand, nine hundred eleven".