85622691 has 16 divisors (see below), whose sum is σ = 142334208. Its totient is φ = 44479200.

The previous prime is 85622689. The next prime is 85622707. The reversal of 85622691 is 19622658.

It is not a de Polignac number, because 85622691 - 2¹ = 85622689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85622291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185100 + ... + 185561.

It is an arithmetic number, because the mean of its divisors is an integer number (8895888).

Almost surely, 2^85622691 is an apocalyptic number.

85622691 is a deficient number, since it is larger than the sum of its proper divisors (56711517).

85622691 is a wasteful number, since it uses less digits than its factorization.

85622691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370682.

The product of its digits is 51840, while the sum is 39.

The square root of 85622691 is about 9253.2529955686. The cubic root of 85622691 is about 440.7540290502.

The spelling of 85622691 in words is "eighty-five million, six hundred twenty-two thousand, six hundred ninety-one".