85565377 has 4 divisors (see below), whose sum is σ = 85810900. Its totient is φ = 85319856.

The previous prime is 85565351. The next prime is 85565387. The reversal of 85565377 is 77356558.

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 34999056 + 50566321 = 5916^2 + 7111^2 .

It is a cyclic number.

It is not a de Polignac number, because 85565377 - 2¹⁵ = 85532609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85565317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122238 + ... + 122935.

It is an arithmetic number, because the mean of its divisors is an integer number (21452725).

Almost surely, 2^85565377 is an apocalyptic number.

It is an amenable number.

85565377 is a deficient number, since it is larger than the sum of its proper divisors (245523).

85565377 is a wasteful number, since it uses less digits than its factorization.

85565377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245522.

The product of its digits is 882000, while the sum is 46.

The square root of 85565377 is about 9250.1555122063. The cubic root of 85565377 is about 440.6556633222.

The spelling of 85565377 in words is "eighty-five million, five hundred sixty-five thousand, three hundred seventy-seven".