8634661 has 4 divisors (see below), whose sum is σ = 9868192. Its totient is φ = 7401132.

The previous prime is 8634629. The next prime is 8634667. The reversal of 8634661 is 1664368.

8634661 is digitally balanced in base 3, 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 a cyclic number.

It is not a de Polignac number, because 8634661 - 2⁵ = 8634629 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 (8634667) 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, 616755 + ... + 616768.

It is an arithmetic number, because the mean of its divisors is an integer number (2467048).

Almost surely, 2^8634661 is an apocalyptic number.

It is an amenable number.

8634661 is a deficient number, since it is larger than the sum of its proper divisors (1233531).

8634661 is a wasteful number, since it uses less digits than its factorization.

8634661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233530.

The product of its digits is 20736, while the sum is 34.

The square root of 8634661 is about 2938.4793686531. The cubic root of 8634661 is about 205.1548384034.

The spelling of 8634661 in words is "eight million, six hundred thirty-four thousand, six hundred sixty-one".