77089965 has 16 divisors (see below), whose sum is σ = 123527808. Its totient is φ = 41053376.

The previous prime is 77089949. The next prime is 77089979. The reversal of 77089965 is 56998077.

It is a cyclic number.

It is not a de Polignac number, because 77089965 - 2⁴ = 77089949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7687 + ... + 14603.

It is an arithmetic number, because the mean of its divisors is an integer number (7720488).

Almost surely, 2^77089965 is an apocalyptic number.

It is an amenable number.

77089965 is a deficient number, since it is larger than the sum of its proper divisors (46437843).

77089965 is a wasteful number, since it uses less digits than its factorization.

77089965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7668.

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 77089965 is about 8780.0891225545. The cubic root of 77089965 is about 425.5977103261.

The spelling of 77089965 in words is "seventy-seven million, eighty-nine thousand, nine hundred sixty-five".