85077715 has 4 divisors (see below), whose sum is σ = 102093264. Its totient is φ = 68062168.

The previous prime is 85077709. The next prime is 85077719. The reversal of 85077715 is 51777058.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85077715 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85077719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8507767 + ... + 8507776.

It is an arithmetic number, because the mean of its divisors is an integer number (25523316).

Almost surely, 2^85077715 is an apocalyptic number.

85077715 is a deficient number, since it is larger than the sum of its proper divisors (17015549).

85077715 is a wasteful number, since it uses less digits than its factorization.

85077715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17015548.

The product of its (nonzero) digits is 68600, while the sum is 40.

The square root of 85077715 is about 9223.7581819994. The cubic root of 85077715 is about 439.8169262483.

The spelling of 85077715 in words is "eighty-five million, seventy-seven thousand, seven hundred fifteen".