9969658 has 4 divisors (see below), whose sum is σ = 14954490. Its totient is φ = 4984828.

The previous prime is 9969653. The next prime is 9969689. The reversal of 9969658 is 8569699.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 9903609 + 66049 = 3147^2 + 257^2 .

It is not an unprimeable number, because it can be changed into a prime (9969653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2492413 + ... + 2492416.

Almost surely, 2^9969658 is an apocalyptic number.

9969658 is a deficient number, since it is larger than the sum of its proper divisors (4984832).

9969658 is a wasteful number, since it uses less digits than its factorization.

9969658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984831.

The product of its digits is 1049760, while the sum is 52.

The square root of 9969658 is about 3157.4765240616. The cubic root of 9969658 is about 215.2253487228.

The spelling of 9969658 in words is "nine million, nine hundred sixty-nine thousand, six hundred fifty-eight".