6642773 has 4 divisors (see below), whose sum is σ = 6857088. Its totient is φ = 6428460.

The previous prime is 6642763. The next prime is 6642793. The reversal of 6642773 is 3772466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3772466 = 2 ⋅1886233.

It is a cyclic number.

It is not a de Polignac number, because 6642773 - 2⁶ = 6642709 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 107111 + ... + 107172.

It is an arithmetic number, because the mean of its divisors is an integer number (1714272).

Almost surely, 2^6642773 is an apocalyptic number.

It is an amenable number.

6642773 is a deficient number, since it is larger than the sum of its proper divisors (214315).

6642773 is a wasteful number, since it uses less digits than its factorization.

6642773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214314.

The product of its digits is 42336, while the sum is 35.

The square root of 6642773 is about 2577.3577555318. The cubic root of 6642773 is about 187.9820886059.

The spelling of 6642773 in words is "six million, six hundred forty-two thousand, seven hundred seventy-three".