9970663 has 4 divisors (see below), whose sum is σ = 9997768. Its totient is φ = 9943560.

The previous prime is 9970621. The next prime is 9970679. The reversal of 9970663 is 3660799.

9970663 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9970663 - 2⁹ = 9970151 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 (9970603) 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, 12993 + ... + 13738.

It is an arithmetic number, because the mean of its divisors is an integer number (2499442).

Almost surely, 2^9970663 is an apocalyptic number.

9970663 is a deficient number, since it is larger than the sum of its proper divisors (27105).

9970663 is a wasteful number, since it uses less digits than its factorization.

9970663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27104.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 9970663 is about 3157.6356661274. The cubic root of 9970663 is about 215.2325804723.

The spelling of 9970663 in words is "nine million, nine hundred seventy thousand, six hundred sixty-three".