1296591 has 8 divisors (see below), whose sum is σ = 1775664. Its totient is φ = 840960.

The previous prime is 1296587. The next prime is 1296593. The reversal of 1296591 is 1956921.

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

It is not a de Polignac number, because 1296591 - 2² = 1296587 is a prime.

It is a super-2 number, since 2×1296591² = 3362296442562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296593) 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, 5730 + ... + 5951.

It is an arithmetic number, because the mean of its divisors is an integer number (221958).

2^1296591 is an apocalyptic number.

1296591 is a deficient number, since it is larger than the sum of its proper divisors (479073).

1296591 is a wasteful number, since it uses less digits than its factorization.

1296591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11721.

The product of its digits is 4860, while the sum is 33.

The square root of 1296591 is about 1138.6794983664. The cubic root of 1296591 is about 109.0438058642.

The spelling of 1296591 in words is "one million, two hundred ninety-six thousand, five hundred ninety-one".