9786897 has 6 divisors (see below), whose sum is σ = 14136642. Its totient is φ = 6524592.

The previous prime is 9786893. The next prime is 9786911. The reversal of 9786897 is 7986879.

It can be written as a sum of positive squares in only one way, i.e., 5588496 + 4198401 = 2364^2 + 2049^2 .

It is not a de Polignac number, because 9786897 - 2² = 9786893 is a prime.

It is an Ulam number.

9786897 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9786893) 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, 543708 + ... + 543725.

It is an arithmetic number, because the mean of its divisors is an integer number (2356107).

Almost surely, 2^9786897 is an apocalyptic number.

It is an amenable number.

9786897 is a deficient number, since it is larger than the sum of its proper divisors (4349745).

9786897 is a wasteful number, since it uses less digits than its factorization.

9786897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087439 (or 1087436 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 9786897 is about 3128.4016685841. The cubic root of 9786897 is about 213.9020791126.

It can be divided in two parts, 978 and 6897, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 9786897 in words is "nine million, seven hundred eighty-six thousand, eight hundred ninety-seven".