1296897 has 8 divisors (see below), whose sum is σ = 1976256. Its totient is φ = 741072.

The previous prime is 1296877. The next prime is 1296899. The reversal of 1296897 is 7986921.

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

It is not a de Polignac number, because 1296897 - 2⁶ = 1296833 is a prime.

1296897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1296899) 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, 30858 + ... + 30899.

It is an arithmetic number, because the mean of its divisors is an integer number (247032).

2^1296897 is an apocalyptic number.

It is an amenable number.

1296897 is a deficient number, since it is larger than the sum of its proper divisors (679359).

1296897 is an equidigital number, since it uses as much as digits as its factorization.

1296897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61767.

The product of its digits is 54432, while the sum is 42.

The square root of 1296897 is about 1138.8138566070. The cubic root of 1296897 is about 109.0523834290.

Subtracting from 1296897 its sum of digits (42), we obtain a triangular number (1296855 = T₁₆₁₀).

The spelling of 1296897 in words is "one million, two hundred ninety-six thousand, eight hundred ninety-seven".