8640622 has 4 divisors (see below), whose sum is σ = 12960936. Its totient is φ = 4320310.

The previous prime is 8640601. The next prime is 8640679. The reversal of 8640622 is 2260468.

8640622 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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2160154 + ... + 2160157.

It is an arithmetic number, because the mean of its divisors is an integer number (3240234).

Almost surely, 2^8640622 is an apocalyptic number.

8640622 is a deficient number, since it is larger than the sum of its proper divisors (4320314).

8640622 is a wasteful number, since it uses less digits than its factorization.

8640622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320313.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 8640622 is about 2939.4934937843. The cubic root of 8640622 is about 205.2020375804.

The spelling of 8640622 in words is "eight million, six hundred forty thousand, six hundred twenty-two".