1660761020 has 24 divisors (see below), whose sum is σ = 3490092144. Its totient is φ = 663829376.

The previous prime is 1660761013. The next prime is 1660761031. The reversal of 1660761020 is 201670661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314 + ... + 57633.

It is an arithmetic number, because the mean of its divisors is an integer number (145420506).

Almost surely, 2^1660761020 is an apocalyptic number.

1660761020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660761020 is an abundant number, since it is smaller than the sum of its proper divisors (1829331124).

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

1660761020 is a wasteful number, since it uses less digits than its factorization.

1660761020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59389 (or 59387 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1660761020 is about 40752.4357554245. The cubic root of 1660761020 is about 1184.2290605262.

The spelling of 1660761020 in words is "one billion, six hundred sixty million, seven hundred sixty-one thousand, twenty".