9966797 has 8 divisors (see below), whose sum is σ = 10440576. Its totient is φ = 9496432.

The previous prime is 9966791. The next prime is 9966799. The reversal of 9966797 is 7976699.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9966797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9966791) 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, 6608 + ... + 7974.

It is an arithmetic number, because the mean of its divisors is an integer number (1305072).

Almost surely, 2^9966797 is an apocalyptic number.

9966797 is the 1688-th centered heptagonal number.

It is an amenable number.

9966797 is a deficient number, since it is larger than the sum of its proper divisors (473779).

9966797 is a wasteful number, since it uses less digits than its factorization.

9966797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707.

The product of its digits is 1285956, while the sum is 53.

The square root of 9966797 is about 3157.0234398876. The cubic root of 9966797 is about 215.2047589616.

The spelling of 9966797 in words is "nine million, nine hundred sixty-six thousand, seven hundred ninety-seven".