6639022 has 16 divisors (see below), whose sum is σ = 11071872. Its totient is φ = 2964960.

The previous prime is 6639013. The next prime is 6639041. The reversal of 6639022 is 2209366.

It is a super-2 number, since 2×6639022² = 88153226232968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3313 + ... + 4924.

It is an arithmetic number, because the mean of its divisors is an integer number (691992).

Almost surely, 2^6639022 is an apocalyptic number.

6639022 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6639022 is a deficient number, since it is larger than the sum of its proper divisors (4432850).

6639022 is a wasteful number, since it uses less digits than its factorization.

6639022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8283.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 6639022 is about 2576.6299695533. The cubic root of 6639022 is about 187.9466990893.

The spelling of 6639022 in words is "six million, six hundred thirty-nine thousand, twenty-two".