1264845 has 32 divisors (see below), whose sum is σ = 2166912. Its totient is φ = 628992.

The previous prime is 1264829. The next prime is 1264853. The reversal of 1264845 is 5484621.

1264845 is a nontrivial binomial coefficient, being equal to C(1591, 2).

It is not a de Polignac number, because 1264845 - 2⁴ = 1264829 is a prime.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 23839 + ... + 23891.

It is an arithmetic number, because the mean of its divisors is an integer number (67716).

2^1264845 is an apocalyptic number.

1264845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1264845 is the 1590-th triangular number.

It is an amenable number.

1264845 is a deficient number, since it is larger than the sum of its proper divisors (902067).

1264845 is a wasteful number, since it uses less digits than its factorization.

1264845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141.

The product of its digits is 7680, while the sum is 30.

The square root of 1264845 is about 1124.6532799045. The cubic root of 1264845 is about 108.1464918798.

The spelling of 1264845 in words is "one million, two hundred sixty-four thousand, eight hundred forty-five".