85015799 has 4 divisors (see below), whose sum is σ = 92744520. Its totient is φ = 77287080.

The previous prime is 85015789. The next prime is 85015817. The reversal of 85015799 is 99751058.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 85015799 - 2⁴ = 85015783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85015769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3864344 + ... + 3864365.

It is an arithmetic number, because the mean of its divisors is an integer number (23186130).

Almost surely, 2^85015799 is an apocalyptic number.

85015799 is a deficient number, since it is larger than the sum of its proper divisors (7728721).

85015799 is a wasteful number, since it uses less digits than its factorization.

85015799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7728720.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 85015799 is about 9220.4012385579. The cubic root of 85015799 is about 439.7102069055.

The spelling of 85015799 in words is "eighty-five million, fifteen thousand, seven hundred ninety-nine".