9904567 has 16 divisors (see below), whose sum is σ = 10910560. Its totient is φ = 8957952.

The previous prime is 9904547. The next prime is 9904579. The reversal of 9904567 is 7654099.

It is a 12-Lehmer number, since φ(9904567) divides (9904567-1)¹².

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9904567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9904547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51223 + ... + 51415.

It is an arithmetic number, because the mean of its divisors is an integer number (681910).

Almost surely, 2^9904567 is an apocalyptic number.

9904567 is a deficient number, since it is larger than the sum of its proper divisors (1005993).

9904567 is a wasteful number, since it uses less digits than its factorization.

9904567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 9904567 is about 3147.1522047718. The cubic root of 9904567 is about 214.7559299930.

The spelling of 9904567 in words is "nine million, nine hundred four thousand, five hundred sixty-seven".