1660766560 has 48 divisors (see below), whose sum is σ = 3930153696. Its totient is φ = 663190528.

The previous prime is 1660766557. The next prime is 1660766603. The reversal of 1660766560 is 656670661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90309 + ... + 107131.

It is an arithmetic number, because the mean of its divisors is an integer number (81878202).

Almost surely, 2^1660766560 is an apocalyptic number.

1660766560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660766560 is an abundant number, since it is smaller than the sum of its proper divisors (2269387136).

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

1660766560 is a wasteful number, since it uses less digits than its factorization.

1660766560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17455 (or 17447 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 1660766560 is about 40752.5037267651. The cubic root of 1660766560 is about 1184.2303773164.

The spelling of 1660766560 in words is "one billion, six hundred sixty million, seven hundred sixty-six thousand, five hundred sixty".