9996667 has 2 divisors, whose sum is σ = 9996668. Its totient is φ = 9996666.

The previous prime is 9996659. The next prime is 9996673. The reversal of 9996667 is 7666999.

9996667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (7666999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9996667 - 2³ = 9996659 is a prime.

It is a super-2 number, since 2×9996667² = 199866702217778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9996617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998333 + 4998334.

It is an arithmetic number, because the mean of its divisors is an integer number (4998334).

Almost surely, 2^9996667 is an apocalyptic number.

9996667 is a deficient number, since it is larger than the sum of its proper divisors (1).

9996667 is an equidigital number, since it uses as much as digits as its factorization.

9996667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1102248, while the sum is 52.

The square root of 9996667 is about 3161.7506226773. The cubic root of 9996667 is about 215.4195305740.

The spelling of 9996667 in words is "nine million, nine hundred ninety-six thousand, six hundred sixty-seven".