85621722 has 16 divisors (see below), whose sum is σ = 171425280. Its totient is φ = 28510272.

The previous prime is 85621699. The next prime is 85621727. The reversal of 85621722 is 22712658.

It is not an unprimeable number, because it can be changed into a prime (85621727) 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, 1018 + ... + 13125.

It is an arithmetic number, because the mean of its divisors is an integer number (10714080).

Almost surely, 2^85621722 is an apocalyptic number.

85621722 is an abundant number, since it is smaller than the sum of its proper divisors (85803558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85621722 is a wasteful number, since it uses less digits than its factorization.

85621722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15157.

The product of its digits is 13440, while the sum is 33.

The square root of 85621722 is about 9253.2006354558. The cubic root of 85621722 is about 440.7523663591.

It can be divided in two parts, 856 and 21722, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 85621722 in words is "eighty-five million, six hundred twenty-one thousand, seven hundred twenty-two".