85910247 has 8 divisors (see below), whose sum is σ = 127274480. Its totient is φ = 57273480.

The previous prime is 85910183. The next prime is 85910257. The reversal of 85910247 is 74201958.

It is not a de Polignac number, because 85910247 - 2⁶ = 85910183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85910257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590904 + ... + 1590957.

It is an arithmetic number, because the mean of its divisors is an integer number (15909310).

Almost surely, 2^85910247 is an apocalyptic number.

85910247 is a deficient number, since it is larger than the sum of its proper divisors (41364233).

85910247 is a wasteful number, since it uses less digits than its factorization.

85910247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181870 (or 3181864 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 85910247 is about 9268.7780748058. The cubic root of 85910247 is about 441.2468884586.

The spelling of 85910247 in words is "eighty-five million, nine hundred ten thousand, two hundred forty-seven".