85786664 has 16 divisors (see below), whose sum is σ = 160948500. Its totient is φ = 42867072.

The previous prime is 85786663. The next prime is 85786667. The reversal of 85786664 is 46668758.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 85414564 + 372100 = 9242^2 + 610^2 .

It is not an unprimeable number, because it can be changed into a prime (85786661) 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, 22634 + ... + 26150.

Almost surely, 2^85786664 is an apocalyptic number.

It is an amenable number.

85786664 is a deficient number, since it is larger than the sum of its proper divisors (75161836).

85786664 is a wasteful number, since it uses less digits than its factorization.

85786664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6572 (or 6568 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The square root of 85786664 is about 9262.1090470799. The cubic root of 85786664 is about 441.0352071411.

The spelling of 85786664 in words is "eighty-five million, seven hundred eighty-six thousand, six hundred sixty-four".