1264547 has 4 divisors (see below), whose sum is σ = 1286040. Its totient is φ = 1243056.

The previous prime is 1264541. The next prime is 1264559. The reversal of 1264547 is 7454621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7454621 = 67 ⋅111263.

It is a cyclic number.

It is not a de Polignac number, because 1264547 - 2¹⁸ = 1002403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264541) 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 3 ways as a sum of consecutive naturals, for example, 10658 + ... + 10775.

It is an arithmetic number, because the mean of its divisors is an integer number (321510).

2^1264547 is an apocalyptic number.

1264547 is a deficient number, since it is larger than the sum of its proper divisors (21493).

1264547 is an equidigital number, since it uses as much as digits as its factorization.

1264547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21492.

The product of its digits is 6720, while the sum is 29.

The square root of 1264547 is about 1124.5207868243. The cubic root of 1264547 is about 108.1379980365.

The spelling of 1264547 in words is "one million, two hundred sixty-four thousand, five hundred forty-seven".