6542066 has 4 divisors (see below), whose sum is σ = 9813102. Its totient is φ = 3271032.

The previous prime is 6542021. The next prime is 6542077. The reversal of 6542066 is 6602456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4906225 + 1635841 = 2215^2 + 1279^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635515 + ... + 1635518.

Almost surely, 2^6542066 is an apocalyptic number.

6542066 is a deficient number, since it is larger than the sum of its proper divisors (3271036).

6542066 is a wasteful number, since it uses less digits than its factorization.

6542066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271035.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 6542066 is about 2557.7462735776. The cubic root of 6542066 is about 187.0272868567.

The spelling of 6542066 in words is "six million, five hundred forty-two thousand, sixty-six".