664160464 has 20 divisors (see below), whose sum is σ = 1403794080. Its totient is φ = 301891040.

The previous prime is 664160417. The next prime is 664160477. The reversal of 664160464 is 464061466.

It is a happy number.

It is a super-2 number, since 2×664160464² = 882218243881390592, which contains 22 as substring.

It is a congruent number.

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, 1886644 + ... + 1886995.

It is an arithmetic number, because the mean of its divisors is an integer number (70189704).

Almost surely, 2^664160464 is an apocalyptic number.

It is an amenable number.

664160464 is an abundant number, since it is smaller than the sum of its proper divisors (739633616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664160464 is a wasteful number, since it uses less digits than its factorization.

664160464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773658 (or 3773652 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 664160464 is about 25771.3108708114. The cubic root of 664160464 is about 872.4844052680.

The spelling of 664160464 in words is "six hundred sixty-four million, one hundred sixty thousand, four hundred sixty-four".