1264685 has 4 divisors (see below), whose sum is σ = 1517628. Its totient is φ = 1011744.

The previous prime is 1264667. The next prime is 1264687. The reversal of 1264685 is 5864621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 917764 + 346921 = 958^2 + 589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126464 + ... + 126473.

It is an arithmetic number, because the mean of its divisors is an integer number (379407).

2^1264685 is an apocalyptic number.

It is an amenable number.

1264685 is a deficient number, since it is larger than the sum of its proper divisors (252943).

1264685 is an equidigital number, since it uses as much as digits as its factorization.

1264685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252942.

The product of its digits is 11520, while the sum is 32.

The square root of 1264685 is about 1124.5821446208. The cubic root of 1264685 is about 108.1419315929.

The spelling of 1264685 in words is "one million, two hundred sixty-four thousand, six hundred eighty-five".