77089985 has 48 divisors (see below), whose sum is σ = 115831296. Its totient is φ = 48932352.

The previous prime is 77089979. The next prime is 77089993. The reversal of 77089985 is 58998077.

It is not a de Polignac number, because 77089985 - 2⁶ = 77089921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 345584 + ... + 345806.

It is an arithmetic number, because the mean of its divisors is an integer number (2413152).

Almost surely, 2^77089985 is an apocalyptic number.

It is an amenable number.

77089985 is a deficient number, since it is larger than the sum of its proper divisors (38741311).

77089985 is a wasteful number, since it uses less digits than its factorization.

77089985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 53.

The square root of 77089985 is about 8780.0902614950. The cubic root of 77089985 is about 425.5977471314.

The spelling of 77089985 in words is "seventy-seven million, eighty-nine thousand, nine hundred eighty-five".