85664606 has 4 divisors (see below), whose sum is σ = 128496912. Its totient is φ = 42832302.

The previous prime is 85664599. The next prime is 85664609. The reversal of 85664606 is 60646658.

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

It is a super-2 number, since 2×85664606² = 14676849442270472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85664609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21416150 + ... + 21416153.

It is an arithmetic number, because the mean of its divisors is an integer number (32124228).

Almost surely, 2^85664606 is an apocalyptic number.

85664606 is a deficient number, since it is larger than the sum of its proper divisors (42832306).

85664606 is a wasteful number, since it uses less digits than its factorization.

85664606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42832305.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 85664606 is about 9255.5175976279. The cubic root of 85664606 is about 440.8259383037.

The spelling of 85664606 in words is "eighty-five million, six hundred sixty-four thousand, six hundred six".