85297187 has 8 divisors (see below), whose sum is σ = 86394000. Its totient is φ = 84206304.

The previous prime is 85297183. The next prime is 85297189. The reversal of 85297187 is 78179258.

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

It is a cyclic number.

It is not a de Polignac number, because 85297187 - 2² = 85297183 is a prime.

It is a super-2 number, since 2×85297187² = 14551220220225938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85297181) 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, 32189 + ... + 34737.

It is an arithmetic number, because the mean of its divisors is an integer number (10799250).

Almost surely, 2^85297187 is an apocalyptic number.

85297187 is a deficient number, since it is larger than the sum of its proper divisors (1096813).

85297187 is a wasteful number, since it uses less digits than its factorization.

85297187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965.

The product of its digits is 282240, while the sum is 47.

The square root of 85297187 is about 9235.6476221216. The cubic root of 85297187 is about 440.1947949468.

The spelling of 85297187 in words is "eighty-five million, two hundred ninety-seven thousand, one hundred eighty-seven".