9905070 has 64 divisors (see below), whose sum is σ = 27495936. Its totient is φ = 2236800.

The previous prime is 9905059. The next prime is 9905087. The reversal of 9905070 is 705099.

It is a happy number.

It is a super-2 number, since 2×9905070² = 196220823409800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 20977 + ... + 21443.

It is an arithmetic number, because the mean of its divisors is an integer number (429624).

Almost surely, 2^9905070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9905070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13747968).

9905070 is an abundant number, since it is smaller than the sum of its proper divisors (17590866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9905070 is a wasteful number, since it uses less digits than its factorization.

9905070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585.

The product of its (nonzero) digits is 2835, while the sum is 30.

The square root of 9905070 is about 3147.2321172738. The cubic root of 9905070 is about 214.7595653666.

The spelling of 9905070 in words is "nine million, nine hundred five thousand, seventy".