6642951 has 16 divisors (see below), whose sum is σ = 10656000. Its totient is φ = 3595968.

The previous prime is 6642919. The next prime is 6642991. The reversal of 6642951 is 1592466.

6642951 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6642951 - 2⁵ = 6642919 is a prime.

6642951 is strictly pandigital in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642991) 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, 7926 + ... + 8723.

It is an arithmetic number, because the mean of its divisors is an integer number (666000).

Almost surely, 2^6642951 is an apocalyptic number.

6642951 is a deficient number, since it is larger than the sum of its proper divisors (4013049).

6642951 is a wasteful number, since it uses less digits than its factorization.

6642951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16678.

The product of its digits is 12960, while the sum is 33.

The square root of 6642951 is about 2577.3922867891. The cubic root of 6642951 is about 187.9837676494.

The spelling of 6642951 in words is "six million, six hundred forty-two thousand, nine hundred fifty-one".