85644658 has 8 divisors (see below), whose sum is σ = 140145840. Its totient is φ = 38929380.

The previous prime is 85644649. The next prime is 85644659.

85644658 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (85644659) 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, 1946448 + ... + 1946491.

It is an arithmetic number, because the mean of its divisors is an integer number (17518230).

Almost surely, 2^85644658 is an apocalyptic number.

85644658 is a deficient number, since it is larger than the sum of its proper divisors (54501182).

85644658 is a wasteful number, since it uses less digits than its factorization.

85644658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892952.

The product of its digits is 921600, while the sum is 46.

The square root of 85644658 is about 9254.4399074174. The cubic root of 85644658 is about 440.7917184982.

The spelling of 85644658 in words is "eighty-five million, six hundred forty-four thousand, six hundred fifty-eight".