85744664 has 16 divisors (see below), whose sum is σ = 162275400. Its totient is φ = 42471232.

The previous prime is 85744661. The next prime is 85744669. The reversal of 85744664 is 46644758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85744661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49229 + ... + 50940.

Almost surely, 2^85744664 is an apocalyptic number.

It is an amenable number.

85744664 is a deficient number, since it is larger than the sum of its proper divisors (76530736).

85744664 is a wasteful number, since it uses less digits than its factorization.

85744664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100282 (or 100278 counting only the distinct ones).

The product of its digits is 645120, while the sum is 44.

The square root of 85744664 is about 9259.8414673255. The cubic root of 85744664 is about 440.9632204181.

The spelling of 85744664 in words is "eighty-five million, seven hundred forty-four thousand, six hundred sixty-four".