85669586 has 4 divisors (see below), whose sum is σ = 128504382. Its totient is φ = 42834792.

The previous prime is 85669583. The next prime is 85669589. The reversal of 85669586 is 68596658.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (85669583) and next prime (85669589).

It can be written as a sum of positive squares in only one way, i.e., 62331025 + 23338561 = 7895^2 + 4831^2 .

It is a super-2 number, since 2×85669586² = 14678555930822792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85669583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21417395 + ... + 21417398.

Almost surely, 2^85669586 is an apocalyptic number.

85669586 is a deficient number, since it is larger than the sum of its proper divisors (42834796).

85669586 is a wasteful number, since it uses less digits than its factorization.

85669586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42834795.

The product of its digits is 3110400, while the sum is 53.

The square root of 85669586 is about 9255.7866224325. The cubic root of 85669586 is about 440.8344804182.

The spelling of 85669586 in words is "eighty-five million, six hundred sixty-nine thousand, five hundred eighty-six".