1860660 has 36 divisors (see below), whose sum is σ = 5644548. Its totient is φ = 496128.

The previous prime is 1860659. The next prime is 1860679. The reversal of 1860660 is 660681.

It can be written as a sum of positive squares in 2 ways, for example, as 318096 + 1542564 = 564^2 + 1242^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4989 + ... + 5348.

It is an arithmetic number, because the mean of its divisors is an integer number (156793).

2^1860660 is an apocalyptic number.

1860660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1860660 is an abundant number, since it is smaller than the sum of its proper divisors (3783888).

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

1860660 is a wasteful number, since it uses less digits than its factorization.

1860660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10352 (or 10347 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1860660 is about 1364.0601159773. The cubic root of 1860660 is about 122.9954390536.

The spelling of 1860660 in words is "one million, eight hundred sixty thousand, six hundred sixty".