9775997 has 8 divisors (see below), whose sum is σ = 12188352. Its totient is φ = 7617600.

The previous prime is 9775993. The next prime is 9776017. The reversal of 9775997 is 7995779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9775997 - 2² = 9775993 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9775993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63404 + ... + 63557.

It is an arithmetic number, because the mean of its divisors is an integer number (1523544).

Almost surely, 2^9775997 is an apocalyptic number.

It is an amenable number.

9775997 is a deficient number, since it is larger than the sum of its proper divisors (2412355).

9775997 is a wasteful number, since it uses less digits than its factorization.

9775997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126979.

The product of its digits is 1250235, while the sum is 53.

The square root of 9775997 is about 3126.6590795928. The cubic root of 9775997 is about 213.8226396073.

The spelling of 9775997 in words is "nine million, seven hundred seventy-five thousand, nine hundred ninety-seven".