1264539 has 8 divisors (see below), whose sum is σ = 1699840. Its totient is φ = 836136.

The previous prime is 1264537. The next prime is 1264541. The reversal of 1264539 is 9354621.

It is an interprime number because it is at equal distance from previous prime (1264537) and next prime (1264541).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1264539 - 2¹ = 1264537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264537) 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, 1279 + ... + 2040.

It is an arithmetic number, because the mean of its divisors is an integer number (212480).

2^1264539 is an apocalyptic number.

1264539 is a deficient number, since it is larger than the sum of its proper divisors (435301).

1264539 is a wasteful number, since it uses less digits than its factorization.

1264539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449.

The product of its digits is 6480, while the sum is 30.

The square root of 1264539 is about 1124.5172297479. The cubic root of 1264539 is about 108.1377699954.

The spelling of 1264539 in words is "one million, two hundred sixty-four thousand, five hundred thirty-nine".