9990617 has 16 divisors (see below), whose sum is σ = 12429312. Its totient is φ = 7819200.

The previous prime is 9990569. The next prime is 9990653. The reversal of 9990617 is 7160999.

It is a happy number.

9990617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9990617 - 2¹⁶ = 9925081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9990667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8648 + ... + 9734.

It is an arithmetic number, because the mean of its divisors is an integer number (776832).

Almost surely, 2^9990617 is an apocalyptic number.

It is an amenable number.

9990617 is a deficient number, since it is larger than the sum of its proper divisors (2438695).

9990617 is a wasteful number, since it uses less digits than its factorization.

9990617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 9990617 is about 3160.7937294294. The cubic root of 9990617 is about 215.3760643812.

The spelling of 9990617 in words is "nine million, nine hundred ninety thousand, six hundred seventeen".