1660766020 has 24 divisors (see below), whose sum is σ = 3498159168. Its totient is φ = 662296800.

The previous prime is 1660765949. The next prime is 1660766021. The reversal of 1660766020 is 206670661.

It is not an unprimeable number, because it can be changed into a prime (1660766021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118816 + ... + 132055.

It is an arithmetic number, because the mean of its divisors is an integer number (145756632).

Almost surely, 2^1660766020 is an apocalyptic number.

1660766020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660766020 is an abundant number, since it is smaller than the sum of its proper divisors (1837393148).

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

1660766020 is a wasteful number, since it uses less digits than its factorization.

1660766020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251211 (or 251209 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 1660766020 is about 40752.4971014047. The cubic root of 1660766020 is about 1184.2302489652.

The spelling of 1660766020 in words is "one billion, six hundred sixty million, seven hundred sixty-six thousand, twenty".