85222907 has 12 divisors (see below), whose sum is σ = 108149976. Its totient is φ = 66407040.

The previous prime is 85222867. The next prime is 85222931. The reversal of 85222907 is 70922258.

It is not a de Polignac number, because 85222907 - 2¹² = 85218811 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (85222957) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78518 + ... + 79595.

It is an arithmetic number, because the mean of its divisors is an integer number (9012498).

Almost surely, 2^85222907 is an apocalyptic number.

85222907 is a deficient number, since it is larger than the sum of its proper divisors (22927069).

85222907 is a wasteful number, since it uses less digits than its factorization.

85222907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158138 (or 158131 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 85222907 is about 9231.6253715150. The cubic root of 85222907 is about 440.0669784401.

The spelling of 85222907 in words is "eighty-five million, two hundred twenty-two thousand, nine hundred seven".