85622785 has 4 divisors (see below), whose sum is σ = 102747348. Its totient is φ = 68498224.

The previous prime is 85622783. The next prime is 85622809. The reversal of 85622785 is 58722658.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49730704 + 35892081 = 7052^2 + 5991^2 .

It is a cyclic number.

It is not a de Polignac number, because 85622785 - 2¹ = 85622783 is a prime.

It is a super-2 number, since 2×85622785² = 14662522622312450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85622783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8562274 + ... + 8562283.

It is an arithmetic number, because the mean of its divisors is an integer number (25686837).

It is a Proth number, since it is equal to 2613 ⋅ 2¹⁵ + 1 and 2613 < 2¹⁵.

Almost surely, 2^85622785 is an apocalyptic number.

It is an amenable number.

85622785 is a deficient number, since it is larger than the sum of its proper divisors (17124563).

85622785 is a wasteful number, since it uses less digits than its factorization.

85622785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17124562.

The product of its digits is 268800, while the sum is 43.

The square root of 85622785 is about 9253.2580748621. The cubic root of 85622785 is about 440.7541903426.

The spelling of 85622785 in words is "eighty-five million, six hundred twenty-two thousand, seven hundred eighty-five".