1380660 has 24 divisors (see below), whose sum is σ = 3866016. Its totient is φ = 368160.

The previous prime is 1380653. The next prime is 1380671. The reversal of 1380660 is 660831.

It is a self number, because there is not a number n which added to its sum of digits gives 1380660.

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, 11446 + ... + 11565.

It is an arithmetic number, because the mean of its divisors is an integer number (161084).

2^1380660 is an apocalyptic number.

1380660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1380660 is an abundant number, since it is smaller than the sum of its proper divisors (2485356).

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

1380660 is a wasteful number, since it uses less digits than its factorization.

1380660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23023 (or 23021 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1380660 is about 1175.0148935226. The cubic root of 1380660 is about 111.3513741626.

The spelling of 1380660 in words is "one million, three hundred eighty thousand, six hundred sixty".