6642371 has 2 divisors, whose sum is σ = 6642372. Its totient is φ = 6642370.

The previous prime is 6642353. The next prime is 6642373. The reversal of 6642371 is 1732466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6642371 - 2¹⁴ = 6625987 is a prime.

Together with 6642373, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6642373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3321185 + 3321186.

It is an arithmetic number, because the mean of its divisors is an integer number (3321186).

Almost surely, 2^6642371 is an apocalyptic number.

6642371 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642371 is an equidigital number, since it uses as much as digits as its factorization.

6642371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 6642371 is about 2577.2797675068. The cubic root of 6642371 is about 187.9782964986.

The spelling of 6642371 in words is "six million, six hundred forty-two thousand, three hundred seventy-one".