8639662 has 4 divisors (see below), whose sum is σ = 12959496. Its totient is φ = 4319830.

The previous prime is 8639647. The next prime is 8639663. The reversal of 8639662 is 2669368.

8639662 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8639663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2159914 + ... + 2159917.

It is an arithmetic number, because the mean of its divisors is an integer number (3239874).

Almost surely, 2^8639662 is an apocalyptic number.

8639662 is a deficient number, since it is larger than the sum of its proper divisors (4319834).

8639662 is a wasteful number, since it uses less digits than its factorization.

8639662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319833.

The product of its digits is 93312, while the sum is 40.

The square root of 8639662 is about 2939.3301958099. The cubic root of 8639662 is about 205.1944377706.

The spelling of 8639662 in words is "eight million, six hundred thirty-nine thousand, six hundred sixty-two".