9516661 has 8 divisors (see below), whose sum is σ = 11865024. Its totient is φ = 7415520.

The previous prime is 9516653. The next prime is 9516673. The reversal of 9516661 is 1666159.

9516661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9516661 - 2³ = 9516653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9516691) 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, 61720 + ... + 61873.

It is an arithmetic number, because the mean of its divisors is an integer number (1483128).

Almost surely, 2^9516661 is an apocalyptic number.

It is an amenable number.

9516661 is a deficient number, since it is larger than the sum of its proper divisors (2348363).

9516661 is a wasteful number, since it uses less digits than its factorization.

9516661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123611.

The product of its digits is 9720, while the sum is 34.

The square root of 9516661 is about 3084.9085885971. The cubic root of 9516661 is about 211.9149192831.

The spelling of 9516661 in words is "nine million, five hundred sixteen thousand, six hundred sixty-one".