1264165 has 16 divisors (see below), whose sum is σ = 1825920. Its totient is φ = 820800.

The previous prime is 1264129. The next prime is 1264177. The reversal of 1264165 is 5614621.

It is not a de Polignac number, because 1264165 - 2⁷ = 1264037 is a prime.

It is a super-2 number, since 2×1264165² = 3196226294450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286 + ... + 1615.

It is an arithmetic number, because the mean of its divisors is an integer number (114120).

2^1264165 is an apocalyptic number.

It is an amenable number.

1264165 is a deficient number, since it is larger than the sum of its proper divisors (561755).

1264165 is a wasteful number, since it uses less digits than its factorization.

1264165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932.

The product of its digits is 1440, while the sum is 25.

The square root of 1264165 is about 1124.3509238667. The cubic root of 1264165 is about 108.1271080035.

Adding to 1264165 its reverse (5614621), we get a palindrome (6878786).

The spelling of 1264165 in words is "one million, two hundred sixty-four thousand, one hundred sixty-five".