85643315 has 8 divisors (see below), whose sum is σ = 105162288. Its totient is φ = 66921120.

The previous prime is 85643303. The next prime is 85643323. The reversal of 85643315 is 51334658.

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

It is a de Polignac number, because none of the positive numbers 2^k-85643315 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, 198956 + ... + 199385.

It is an arithmetic number, because the mean of its divisors is an integer number (13145286).

Almost surely, 2^85643315 is an apocalyptic number.

85643315 is a deficient number, since it is larger than the sum of its proper divisors (19518973).

85643315 is a wasteful number, since it uses less digits than its factorization.

85643315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398389.

The product of its digits is 43200, while the sum is 35.

The square root of 85643315 is about 9254.3673473663. The cubic root of 85643315 is about 440.7894144573.

It can be divided in two parts, 85643 and 315, that added together give a palindrome (85958).

The spelling of 85643315 in words is "eighty-five million, six hundred forty-three thousand, three hundred fifteen".