1265660 has 36 divisors (see below), whose sum is σ = 2927064. Its totient is φ = 459360.

The previous prime is 1265657. The next prime is 1265681. The reversal of 1265660 is 665621.

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, 2159 + ... + 2681.

2^1265660 is an apocalyptic number.

1265660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1265660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463532).

1265660 is an abundant number, since it is smaller than the sum of its proper divisors (1661404).

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

1265660 is a wasteful number, since it uses less digits than its factorization.

1265660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1265660 is about 1125.0155554480. The cubic root of 1265660 is about 108.1697148747.

The spelling of 1265660 in words is "one million, two hundred sixty-five thousand, six hundred sixty".