6642370 has 32 divisors (see below), whose sum is σ = 14109696. Its totient is φ = 2203200.

The previous prime is 6642353. The next prime is 6642371. The reversal of 6642370 is 732466.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (6642371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640 + ... + 3700.

It is an arithmetic number, because the mean of its divisors is an integer number (440928).

Almost surely, 2^6642370 is an apocalyptic number.

6642370 is an abundant number, since it is smaller than the sum of its proper divisors (7467326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6642370 is a wasteful number, since it uses less digits than its factorization.

6642370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 6642370 is about 2577.2795735038. The cubic root of 6642370 is about 187.9782870653.

It can be divided in two parts, 66 and 42370, that added together give a square (42436 = 206²).

The spelling of 6642370 in words is "six million, six hundred forty-two thousand, three hundred seventy".