85305644 has 6 divisors (see below), whose sum is σ = 149284884. Its totient is φ = 42652820.

The previous prime is 85305637. The next prime is 85305659. The reversal of 85305644 is 44650358.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10663202 + ... + 10663209.

It is an arithmetic number, because the mean of its divisors is an integer number (24880814).

Almost surely, 2^85305644 is an apocalyptic number.

It is an amenable number.

85305644 is a deficient number, since it is larger than the sum of its proper divisors (63979240).

85305644 is a wasteful number, since it uses less digits than its factorization.

85305644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21326415 (or 21326413 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 85305644 is about 9236.1054563057. The cubic root of 85305644 is about 440.2093425323.

The spelling of 85305644 in words is "eighty-five million, three hundred five thousand, six hundred forty-four".