9699966 has 32 divisors (see below), whose sum is σ = 21669120. Its totient is φ = 3216312.

The previous prime is 9699959. The next prime is 9699973. The reversal of 9699966 is 6699969.

It is an interprime number because it is at equal distance from previous prime (9699959) and next prime (9699973).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13861 + ... + 14543.

It is an arithmetic number, because the mean of its divisors is an integer number (677160).

Almost surely, 2^9699966 is an apocalyptic number.

9699966 is an abundant number, since it is smaller than the sum of its proper divisors (11969154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9699966 is a wasteful number, since it uses less digits than its factorization.

9699966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957 (or 951 counting only the distinct ones).

The product of its digits is 1417176, while the sum is 54.

The square root of 9699966 is about 3114.4768421037. The cubic root of 9699966 is about 213.2668743722.

The spelling of 9699966 in words is "nine million, six hundred ninety-nine thousand, nine hundred sixty-six".