10891197 has 12 divisors (see below), whose sum is σ = 15909660. Its totient is φ = 7178688.

The previous prime is 10891193. The next prime is 10891201. The reversal of 10891197 is 79119801.

It is an interprime number because it is at equal distance from previous prime (10891193) and next prime (10891201).

It can be written as a sum of positive squares in 2 ways, for example, as 1490841 + 9400356 = 1221^2 + 3066^2 .

It is not a de Polignac number, because 10891197 - 2² = 10891193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10891193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5998 + ... + 7599.

It is an arithmetic number, because the mean of its divisors is an integer number (1325805).

Almost surely, 2^10891197 is an apocalyptic number.

It is an amenable number.

10891197 is a deficient number, since it is larger than the sum of its proper divisors (5018463).

10891197 is a wasteful number, since it uses less digits than its factorization.

10891197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13692 (or 13689 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 36.

The square root of 10891197 is about 3300.1813586529. The cubic root of 10891197 is about 221.6623183675.

The spelling of 10891197 in words is "ten million, eight hundred ninety-one thousand, one hundred ninety-seven".