9990662 has 16 divisors (see below), whose sum is σ = 17310672. Its totient is φ = 4273920.

The previous prime is 9990661. The next prime is 9990667. The reversal of 9990662 is 2660999.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990661) 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, 12983 + ... + 13730.

It is an arithmetic number, because the mean of its divisors is an integer number (1081917).

Almost surely, 2^9990662 is an apocalyptic number.

9990662 is a deficient number, since it is larger than the sum of its proper divisors (7320010).

9990662 is a wasteful number, since it uses less digits than its factorization.

9990662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26743.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 9990662 is about 3160.8008478865. The cubic root of 9990662 is about 215.3763877482.

The spelling of 9990662 in words is "nine million, nine hundred ninety thousand, six hundred sixty-two".