8693661 has 4 divisors (see below), whose sum is σ = 11591552. Its totient is φ = 5795772.

The previous prime is 8693653. The next prime is 8693677. The reversal of 8693661 is 1663968.

It is a happy number.

8693661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 8693661 - 2³ = 8693653 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 (8693161) 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, 1448941 + ... + 1448946.

It is an arithmetic number, because the mean of its divisors is an integer number (2897888).

Almost surely, 2^8693661 is an apocalyptic number.

It is an amenable number.

8693661 is a deficient number, since it is larger than the sum of its proper divisors (2897891).

8693661 is a wasteful number, since it uses less digits than its factorization.

8693661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2897890.

The product of its digits is 46656, while the sum is 39.

The square root of 8693661 is about 2948.5014838050. The cubic root of 8693661 is about 205.6210474322.

The spelling of 8693661 in words is "eight million, six hundred ninety-three thousand, six hundred sixty-one".