85637091 has 8 divisors (see below), whose sum is σ = 114375184. Its totient is φ = 56995200.

The previous prime is 85637089. The next prime is 85637117. The reversal of 85637091 is 19073658.

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

It is not a de Polignac number, because 85637091 - 2¹ = 85637089 is a prime.

It is a super-2 number, since 2×85637091² = 14667422709884562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85637011) 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, 21946 + ... + 25551.

It is an arithmetic number, because the mean of its divisors is an integer number (14296898).

Almost surely, 2^85637091 is an apocalyptic number.

85637091 is a deficient number, since it is larger than the sum of its proper divisors (28738093).

85637091 is a wasteful number, since it uses less digits than its factorization.

85637091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48101.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 85637091 is about 9254.0310675943. The cubic root of 85637091 is about 440.7787362945.

The spelling of 85637091 in words is "eighty-five million, six hundred thirty-seven thousand, ninety-one".