8611646 has 4 divisors (see below), whose sum is σ = 12917472. Its totient is φ = 4305822.

The previous prime is 8611643. The next prime is 8611663. The reversal of 8611646 is 6461168.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8611643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2152910 + ... + 2152913.

It is an arithmetic number, because the mean of its divisors is an integer number (3229368).

Almost surely, 2^8611646 is an apocalyptic number.

8611646 is a deficient number, since it is larger than the sum of its proper divisors (4305826).

8611646 is a wasteful number, since it uses less digits than its factorization.

8611646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4305825.

The product of its digits is 6912, while the sum is 32.

The square root of 8611646 is about 2934.5606144702. The cubic root of 8611646 is about 204.9724015990.

The spelling of 8611646 in words is "eight million, six hundred eleven thousand, six hundred forty-six".