6642774 has 24 divisors (see below), whose sum is σ = 14531400. Its totient is φ = 2192928.

The previous prime is 6642763. The next prime is 6642793. The reversal of 6642774 is 4772466.

6642774 is a `hidden beast` number, since 6 + 642 + 7 + 7 + 4 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202 + ... + 3650.

It is an arithmetic number, because the mean of its divisors is an integer number (605475).

Almost surely, 2^6642774 is an apocalyptic number.

6642774 is an abundant number, since it is smaller than the sum of its proper divisors (7888626).

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

6642774 is a wasteful number, since it uses less digits than its factorization.

6642774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564 (or 3561 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 6642774 is about 2577.3579495289. The cubic root of 6642774 is about 187.9820980388.

The spelling of 6642774 in words is "six million, six hundred forty-two thousand, seven hundred seventy-four".