9966757 has 4 divisors (see below), whose sum is σ = 9973216. Its totient is φ = 9960300.

The previous prime is 9966721. The next prime is 9966769. The reversal of 9966757 is 7576699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9966757 - 2⁷ = 9966629 is a prime.

It is a Duffinian number.

9966757 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9966757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9966707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598 + ... + 4504.

It is an arithmetic number, because the mean of its divisors is an integer number (2493304).

Almost surely, 2^9966757 is an apocalyptic number.

It is an amenable number.

9966757 is a deficient number, since it is larger than the sum of its proper divisors (6459).

9966757 is a wasteful number, since it uses less digits than its factorization.

9966757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6458.

The product of its digits is 714420, while the sum is 49.

The square root of 9966757 is about 3157.0171048000. The cubic root of 9966757 is about 215.2044710656.

The spelling of 9966757 in words is "nine million, nine hundred sixty-six thousand, seven hundred fifty-seven".