1264161 has 8 divisors (see below), whose sum is σ = 1692640. Its totient is φ = 839232.

The previous prime is 1264129. The next prime is 1264177. The reversal of 1264161 is 1614621.

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

It is not a de Polignac number, because 1264161 - 2⁵ = 1264129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264061) 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, 105 + ... + 1593.

It is an arithmetic number, because the mean of its divisors is an integer number (211580).

2^1264161 is an apocalyptic number.

It is an amenable number.

1264161 is a deficient number, since it is larger than the sum of its proper divisors (428479).

1264161 is a wasteful number, since it uses less digits than its factorization.

1264161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775.

The product of its digits is 288, while the sum is 21.

The square root of 1264161 is about 1124.3491450613. The cubic root of 1264161 is about 108.1269939601.

Adding to 1264161 its reverse (1614621), we get a palindrome (2878782).

The spelling of 1264161 in words is "one million, two hundred sixty-four thousand, one hundred sixty-one".