1660320464 has 40 divisors (see below), whose sum is σ = 3518480160. Its totient is φ = 752720000.

The previous prime is 1660320457. The next prime is 1660320523. The reversal of 1660320464 is 4640230661.

It is a self number, because there is not a number n which added to its sum of digits gives 1660320464.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56339 + ... + 80589.

It is an arithmetic number, because the mean of its divisors is an integer number (87962004).

Almost surely, 2^1660320464 is an apocalyptic number.

It is an amenable number.

1660320464 is an abundant number, since it is smaller than the sum of its proper divisors (1858159696).

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

1660320464 is a wasteful number, since it uses less digits than its factorization.

1660320464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24659 (or 24653 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 1660320464 is about 40747.0301249060. The cubic root of 1660320464 is about 1184.1243363764.

The spelling of 1660320464 in words is "one billion, six hundred sixty million, three hundred twenty thousand, four hundred sixty-four".