1156897 has 16 divisors (see below), whose sum is σ = 1411200. Its totient is φ = 927360.

The previous prime is 1156873. The next prime is 1156907. The reversal of 1156897 is 7986511.

It is not a de Polignac number, because 1156897 - 2⁷ = 1156769 is a prime.

Its product of digits (15120) is a multiple of the sum of its prime divisors (216).

It is not an unprimeable number, because it can be changed into a prime (1156807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8254 + ... + 8392.

It is an arithmetic number, because the mean of its divisors is an integer number (88200).

2^1156897 is an apocalyptic number.

It is an amenable number.

1156897 is a deficient number, since it is larger than the sum of its proper divisors (254303).

1156897 is a wasteful number, since it uses less digits than its factorization.

1156897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216.

The product of its digits is 15120, while the sum is 37.

The square root of 1156897 is about 1075.5914651948. The cubic root of 1156897 is about 104.9779848024.

The spelling of 1156897 in words is "one million, one hundred fifty-six thousand, eight hundred ninety-seven".