9387661 has 4 divisors (see below), whose sum is σ = 9394812. Its totient is φ = 9380512.

The previous prime is 9387629. The next prime is 9387671. The reversal of 9387661 is 1667839.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2232036 + 7155625 = 1494^2 + 2675^2 .

It is a cyclic number.

It is not a de Polignac number, because 9387661 - 2⁵ = 9387629 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 (9387671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976 + ... + 4441.

It is an arithmetic number, because the mean of its divisors is an integer number (2348703).

Almost surely, 2^9387661 is an apocalyptic number.

It is an amenable number.

9387661 is a deficient number, since it is larger than the sum of its proper divisors (7151).

9387661 is a wasteful number, since it uses less digits than its factorization.

9387661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7150.

The product of its digits is 54432, while the sum is 40.

The square root of 9387661 is about 3063.9290135380. The cubic root of 9387661 is about 210.9530454131.

The spelling of 9387661 in words is "nine million, three hundred eighty-seven thousand, six hundred sixty-one".