1172897 has 4 divisors (see below), whose sum is σ = 1279536. Its totient is φ = 1066260.

The previous prime is 1172893. The next prime is 1172903. The reversal of 1172897 is 7982711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1172897 - 2² = 1172893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1172893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53303 + ... + 53324.

It is an arithmetic number, because the mean of its divisors is an integer number (319884).

2^1172897 is an apocalyptic number.

It is an amenable number.

1172897 is a deficient number, since it is larger than the sum of its proper divisors (106639).

1172897 is a wasteful number, since it uses less digits than its factorization.

1172897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106638.

The product of its digits is 7056, while the sum is 35.

The square root of 1172897 is about 1083.0036934378. The cubic root of 1172897 is about 105.4597227262.

The spelling of 1172897 in words is "one million, one hundred seventy-two thousand, eight hundred ninety-seven".