1165660 has 24 divisors (see below), whose sum is σ = 2469600. Its totient is φ = 462144.

The previous prime is 1165643. The next prime is 1165667. The reversal of 1165660 is 665611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165667) 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, 3166 + ... + 3514.

It is an arithmetic number, because the mean of its divisors is an integer number (102900).

2^1165660 is an apocalyptic number.

1165660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165660 is an abundant number, since it is smaller than the sum of its proper divisors (1303940).

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

1165660 is a wasteful number, since it uses less digits than its factorization.

1165660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1165660 is about 1079.6573530523. The cubic root of 1165660 is about 105.2423728259.

It can be divided in two parts, 116 and 5660, that added together give a square (5776 = 76²).

The spelling of 1165660 in words is "one million, one hundred sixty-five thousand, six hundred sixty".