9415661 has 4 divisors (see below), whose sum is σ = 9719424. Its totient is φ = 9111900.

The previous prime is 9415597. The next prime is 9415673. The reversal of 9415661 is 1665149.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9415661 - 2⁶ = 9415597 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 (9415361) 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, 151835 + ... + 151896.

It is an arithmetic number, because the mean of its divisors is an integer number (2429856).

Almost surely, 2^9415661 is an apocalyptic number.

It is an amenable number.

9415661 is a deficient number, since it is larger than the sum of its proper divisors (303763).

9415661 is a wasteful number, since it uses less digits than its factorization.

9415661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303762.

The product of its digits is 6480, while the sum is 32.

The square root of 9415661 is about 3068.4949079312. The cubic root of 9415661 is about 211.1625694710.

The spelling of 9415661 in words is "nine million, four hundred fifteen thousand, six hundred sixty-one".