9906907 has 4 divisors (see below), whose sum is σ = 9927576. Its totient is φ = 9886240.

The previous prime is 9906877. The next prime is 9906917. The reversal of 9906907 is 7096099.

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

It is a cyclic number.

It is not a de Polignac number, because 9906907 - 2⁷ = 9906779 is a prime.

It is a Duffinian number.

9906907 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9906907.

It is not an unprimeable number, because it can be changed into a prime (9906917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9598 + ... + 10579.

It is an arithmetic number, because the mean of its divisors is an integer number (2481894).

Almost surely, 2^9906907 is an apocalyptic number.

9906907 is a deficient number, since it is larger than the sum of its proper divisors (20669).

9906907 is a wasteful number, since it uses less digits than its factorization.

9906907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20668.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 9906907 is about 3147.5239474863. The cubic root of 9906907 is about 214.7728410236.

The spelling of 9906907 in words is "nine million, nine hundred six thousand, nine hundred seven".