6642069 has 16 divisors (see below), whose sum is σ = 10176000. Its totient is φ = 3774960.

The previous prime is 6642067. The next prime is 6642071. The reversal of 6642069 is 9602466.

It is an interprime number because it is at equal distance from previous prime (6642067) and next prime (6642071).

It is not a de Polignac number, because 6642069 - 2¹ = 6642067 is a prime.

It is a super-2 number, since 2×6642069² = 88234161201522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3682 + ... + 5180.

It is an arithmetic number, because the mean of its divisors is an integer number (636000).

Almost surely, 2^6642069 is an apocalyptic number.

It is an amenable number.

6642069 is a deficient number, since it is larger than the sum of its proper divisors (3533931).

6642069 is a wasteful number, since it uses less digits than its factorization.

6642069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 6642069 is about 2577.2211779356. The cubic root of 6642069 is about 187.9754476010.

The spelling of 6642069 in words is "six million, six hundred forty-two thousand, sixty-nine".