664796485 has 16 divisors (see below), whose sum is σ = 833172480. Its totient is φ = 508266880.

The previous prime is 664796477. The next prime is 664796497. The reversal of 664796485 is 584697466.

It is not a de Polignac number, because 664796485 - 2³ = 664796477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196236 + ... + 199594.

It is an arithmetic number, because the mean of its divisors is an integer number (52073280).

Almost surely, 2^664796485 is an apocalyptic number.

It is an amenable number.

664796485 is a deficient number, since it is larger than the sum of its proper divisors (168375995).

664796485 is a wasteful number, since it uses less digits than its factorization.

664796485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5108.

The product of its digits is 8709120, while the sum is 55.

The square root of 664796485 is about 25783.6476279056. The cubic root of 664796485 is about 872.7628226046.

It can be divided in two parts, 664796 and 485, that added together give a triangular number (665281 = T₁₁₅₃).

The spelling of 664796485 in words is "six hundred sixty-four million, seven hundred ninety-six thousand, four hundred eighty-five".