77985335 has 8 divisors (see below), whose sum is σ = 94900896. Its totient is φ = 61509280.

The previous prime is 77985331. The next prime is 77985343. The reversal of 77985335 is 53358977.

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

It is not a de Polignac number, because 77985335 - 2² = 77985331 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77985335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77985331) 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, 109484 + ... + 110193.

It is an arithmetic number, because the mean of its divisors is an integer number (11862612).

Almost surely, 2^77985335 is an apocalyptic number.

77985335 is a deficient number, since it is larger than the sum of its proper divisors (16915561).

77985335 is a wasteful number, since it uses less digits than its factorization.

77985335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219753.

The product of its digits is 793800, while the sum is 47.

The square root of 77985335 is about 8830.9305851648. The cubic root of 77985335 is about 427.2390893378.

The spelling of 77985335 in words is "seventy-seven million, nine hundred eighty-five thousand, three hundred thirty-five".