1264660 has 24 divisors (see below), whose sum is σ = 2729160. Its totient is φ = 491904.

The previous prime is 1264657. The next prime is 1264663. The reversal of 1264660 is 664621.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1264657) and next prime (1264663).

It can be written as a sum of positive squares in 4 ways, for example, as 174724 + 1089936 = 418^2 + 1044^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264663) 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, 115 + ... + 1594.

It is an arithmetic number, because the mean of its divisors is an integer number (113715).

2^1264660 is an apocalyptic number.

1264660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264660 is an abundant number, since it is smaller than the sum of its proper divisors (1464500).

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

1264660 is a wasteful number, since it uses less digits than its factorization.

1264660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755 (or 1753 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1264660 is about 1124.5710293263. The cubic root of 1264660 is about 108.1412190133.

The spelling of 1264660 in words is "one million, two hundred sixty-four thousand, six hundred sixty".