6645022 has 16 divisors (see below), whose sum is σ = 10949760. Its totient is φ = 3010392.

The previous prime is 6645019. The next prime is 6645047. The reversal of 6645022 is 2205466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2928 + ... + 4675.

It is an arithmetic number, because the mean of its divisors is an integer number (684360).

Almost surely, 2^6645022 is an apocalyptic number.

6645022 is a deficient number, since it is larger than the sum of its proper divisors (4304738).

6645022 is a wasteful number, since it uses less digits than its factorization.

6645022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7647.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 6645022 is about 2577.7940181481. The cubic root of 6645022 is about 188.0033008323.

The spelling of 6645022 in words is "six million, six hundred forty-five thousand, twenty-two".