6542906 has 8 divisors (see below), whose sum is σ = 9830964. Its totient is φ = 3265920.

The previous prime is 6542867. The next prime is 6542927. The reversal of 6542906 is 6092456.

It can be written as a sum of positive squares in 2 ways, for example, as 6375625 + 167281 = 2525^2 + 409^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 1085 + ... + 3776.

Almost surely, 2^6542906 is an apocalyptic number.

6542906 is a deficient number, since it is larger than the sum of its proper divisors (3288058).

6542906 is a wasteful number, since it uses less digits than its factorization.

6542906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 6542906 is about 2557.9104753685. The cubic root of 6542906 is about 187.0352912698.

The spelling of 6542906 in words is "six million, five hundred forty-two thousand, nine hundred six".