9999662 has 16 divisors (see below), whose sum is σ = 15993600. Its totient is φ = 4675320.

The previous prime is 9999659. The next prime is 9999667. The reversal of 9999662 is 2669999.

It is a super-2 number, since 2×9999662² = 199986480228488, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9999662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337 + ... + 4667.

It is an arithmetic number, because the mean of its divisors is an integer number (999600).

Almost surely, 2^9999662 is an apocalyptic number.

9999662 is a deficient number, since it is larger than the sum of its proper divisors (5993938).

9999662 is a wasteful number, since it uses less digits than its factorization.

9999662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3431.

The product of its digits is 472392, while the sum is 50.

The square root of 9999662 is about 3162.2242172243. The cubic root of 9999662 is about 215.4410416461.

The spelling of 9999662 in words is "nine million, nine hundred ninety-nine thousand, six hundred sixty-two".