9985511 has 8 divisors (see below), whose sum is σ = 10723104. Its totient is φ = 9264640.

The previous prime is 9985501. The next prime is 9985553. The reversal of 9985511 is 1155899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9985511 - 2⁶ = 9985447 is a prime.

It is a super-2 number, since 2×9985511² = 199420859862242, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2930 + ... + 5343.

It is an arithmetic number, because the mean of its divisors is an integer number (1340388).

Almost surely, 2^9985511 is an apocalyptic number.

9985511 is a deficient number, since it is larger than the sum of its proper divisors (737593).

9985511 is a wasteful number, since it uses less digits than its factorization.

9985511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8361.

The product of its digits is 16200, while the sum is 38.

The square root of 9985511 is about 3159.9859176901. The cubic root of 9985511 is about 215.3393666950.

The spelling of 9985511 in words is "nine million, nine hundred eighty-five thousand, five hundred eleven".