1163897 has 6 divisors (see below), whose sum is σ = 1353978. Its totient is φ = 997584.

The previous prime is 1163891. The next prime is 1163923. The reversal of 1163897 is 7983611.

1163897 = T₁₉₃ + T₁₉₄ + ... + T₂₄₁.

It can be written as a sum of positive squares in only one way, i.e., 1073296 + 90601 = 1036^2 + 301^2 .

It is not a de Polignac number, because 1163897 - 2⁸ = 1163641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1163891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11828 + ... + 11925.

It is an arithmetic number, because the mean of its divisors is an integer number (225663).

2^1163897 is an apocalyptic number.

It is an amenable number.

1163897 is a deficient number, since it is larger than the sum of its proper divisors (190081).

1163897 is an equidigital number, since it uses as much as digits as its factorization.

1163897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23767 (or 23760 counting only the distinct ones).

The product of its digits is 9072, while the sum is 35.

The square root of 1163897 is about 1078.8405813650. The cubic root of 1163897 is about 105.1892881863.

The spelling of 1163897 in words is "one million, one hundred sixty-three thousand, eight hundred ninety-seven".