78535985 has 8 divisors (see below), whose sum is σ = 102810816. Its totient is φ = 57117040.

The previous prime is 78535979. The next prime is 78535991. The reversal of 78535985 is 58953587.

It is an interprime number because it is at equal distance from previous prime (78535979) and next prime (78535991).

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

It is not a de Polignac number, because 78535985 - 2⁸ = 78535729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713909 + ... + 714018.

It is an arithmetic number, because the mean of its divisors is an integer number (12851352).

Almost surely, 2^78535985 is an apocalyptic number.

It is an amenable number.

78535985 is a deficient number, since it is larger than the sum of its proper divisors (24274831).

78535985 is a wasteful number, since it uses less digits than its factorization.

78535985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427943.

The product of its digits is 1512000, while the sum is 50.

The square root of 78535985 is about 8862.0530916938. The cubic root of 78535985 is about 428.2423020965.

The spelling of 78535985 in words is "seventy-eight million, five hundred thirty-five thousand, nine hundred eighty-five".