1264564 has 24 divisors (see below), whose sum is σ = 2663360. Its totient is φ = 513216.

The previous prime is 1264561. The next prime is 1264573. The reversal of 1264564 is 4654621.

It is a super-2 number, since 2×1264564² = 3198244220192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657 + ... + 1720.

2^1264564 is an apocalyptic number.

1264564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1264564 is an abundant number, since it is smaller than the sum of its proper divisors (1398796).

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

1264564 is a wasteful number, since it uses less digits than its factorization.

1264564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407 (or 2405 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 1264564 is about 1124.5283455743. The cubic root of 1264564 is about 108.1384826205.

The spelling of 1264564 in words is "one million, two hundred sixty-four thousand, five hundred sixty-four".