85156897 has 8 divisors (see below), whose sum is σ = 97570496. Its totient is φ = 72805392.

The previous prime is 85156889. The next prime is 85156901. The reversal of 85156897 is 79865158.

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 85156897 - 2³ = 85156889 is a prime.

It is a super-3 number, since 3×85156897³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85156897.

It is not an unprimeable number, because it can be changed into a prime (85156817) 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, 12543 + ... + 18100.

It is an arithmetic number, because the mean of its divisors is an integer number (12196312).

Almost surely, 2^85156897 is an apocalyptic number.

It is an amenable number.

85156897 is a deficient number, since it is larger than the sum of its proper divisors (12413599).

85156897 is a wasteful number, since it uses less digits than its factorization.

85156897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31047.

The product of its digits is 604800, while the sum is 49.

The square root of 85156897 is about 9228.0494688748. The cubic root of 85156897 is about 439.9533301051.

The spelling of 85156897 in words is "eighty-five million, one hundred fifty-six thousand, eight hundred ninety-seven".