1660342664 has 16 divisors (see below), whose sum is σ = 3276992400. Its totient is φ = 786478032.

The previous prime is 1660342657. The next prime is 1660342679. The reversal of 1660342664 is 4662430661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5461502 + ... + 5461805.

It is an arithmetic number, because the mean of its divisors is an integer number (204812025).

Almost surely, 2^1660342664 is an apocalyptic number.

It is an amenable number.

1660342664 is a deficient number, since it is larger than the sum of its proper divisors (1616649736).

1660342664 is a wasteful number, since it uses less digits than its factorization.

1660342664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10923332 (or 10923328 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 1660342664 is about 40747.3025364870. The cubic root of 1660342664 is about 1184.1296139606.

The spelling of 1660342664 in words is "one billion, six hundred sixty million, three hundred forty-two thousand, six hundred sixty-four".