6642562 has 8 divisors (see below), whose sum is σ = 10100556. Its totient is φ = 3275712.

The previous prime is 6642553. The next prime is 6642593. The reversal of 6642562 is 2652466.

It can be written as a sum of positive squares in 2 ways, for example, as 6497401 + 145161 = 2549^2 + 381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22603 + ... + 22894.

Almost surely, 2^6642562 is an apocalyptic number.

6642562 is a deficient number, since it is larger than the sum of its proper divisors (3457994).

6642562 is a wasteful number, since it uses less digits than its factorization.

6642562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45572.

The product of its digits is 17280, while the sum is 31.

The square root of 6642562 is about 2577.3168218129. The cubic root of 6642562 is about 187.9800982403.

The spelling of 6642562 in words is "six million, six hundred forty-two thousand, five hundred sixty-two".