6642711 has 24 divisors (see below), whose sum is σ = 10258560. Its totient is φ = 4132800.

The previous prime is 6642709. The next prime is 6642763. The reversal of 6642711 is 1172466.

6642711 is a `hidden beast` number, since 6 + 642 + 7 + 11 = 666.

It is not a de Polignac number, because 6642711 - 2¹ = 6642709 is a prime.

6642711 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7681 + ... + 8501.

It is an arithmetic number, because the mean of its divisors is an integer number (427440).

Almost surely, 2^6642711 is an apocalyptic number.

6642711 is a deficient number, since it is larger than the sum of its proper divisors (3615849).

6642711 is a wasteful number, since it uses less digits than its factorization.

6642711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887 (or 884 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 6642711 is about 2577.3457276819. The cubic root of 6642711 is about 187.9815037635.

It can be divided in two parts, 664 and 2711, that added together give a cube (3375 = 15³).

The spelling of 6642711 in words is "six million, six hundred forty-two thousand, seven hundred eleven".