85644994 has 8 divisors (see below), whose sum is σ = 128565180. Its totient is φ = 42789936.

The previous prime is 85644959. The next prime is 85645019. The reversal of 85644994 is 49944658.

It can be written as a sum of positive squares in 2 ways, for example, as 84879369 + 765625 = 9213^2 + 875^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12849 + ... + 18340.

Almost surely, 2^85644994 is an apocalyptic number.

85644994 is a deficient number, since it is larger than the sum of its proper divisors (42920186).

85644994 is a wasteful number, since it uses less digits than its factorization.

85644994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32564.

The product of its digits is 1244160, while the sum is 49.

The square root of 85644994 is about 9254.4580608483. The cubic root of 85644994 is about 440.7922949335.

The spelling of 85644994 in words is "eighty-five million, six hundred forty-four thousand, nine hundred ninety-four".