6642963 has 6 divisors (see below), whose sum is σ = 9595404. Its totient is φ = 4428636.

The previous prime is 6642919. The next prime is 6642991. The reversal of 6642963 is 3692466.

6642963 is a `hidden beast` number, since 6 + 642 + 9 + 6 + 3 = 666.

It is not a de Polignac number, because 6642963 - 2⁸ = 6642707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6642763) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 369045 + ... + 369062.

It is an arithmetic number, because the mean of its divisors is an integer number (1599234).

Almost surely, 2^6642963 is an apocalyptic number.

6642963 is a deficient number, since it is larger than the sum of its proper divisors (2952441).

6642963 is a wasteful number, since it uses less digits than its factorization.

6642963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738113 (or 738110 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 6642963 is about 2577.3946147224. The cubic root of 6642963 is about 187.9838808422.

The spelling of 6642963 in words is "six million, six hundred forty-two thousand, nine hundred sixty-three".