78370085 has 16 divisors (see below), whose sum is σ = 103908096. Its totient is φ = 56441088.

The previous prime is 78370081. The next prime is 78370087. The reversal of 78370085 is 58007387.

It is not a de Polignac number, because 78370085 - 2² = 78370081 is a prime.

It is a super-2 number, since 2×78370085² = 12283740445814450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78370081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18089 + ... + 21998.

It is an arithmetic number, because the mean of its divisors is an integer number (6494256).

Almost surely, 2^78370085 is an apocalyptic number.

It is an amenable number.

78370085 is a deficient number, since it is larger than the sum of its proper divisors (25538011).

78370085 is a wasteful number, since it uses less digits than its factorization.

78370085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40132.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 78370085 is about 8852.6880098646. The cubic root of 78370085 is about 427.9405487779.

The spelling of 78370085 in words is "seventy-eight million, three hundred seventy thousand, eighty-five".