6542664 has 32 divisors (see below), whose sum is σ = 16489440. Its totient is φ = 2163200.

The previous prime is 6542647. The next prime is 6542681. The reversal of 6542664 is 4662456.

It is an interprime number because it is at equal distance from previous prime (6542647) and next prime (6542681).

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 7 ways as a sum of consecutive naturals, for example, 2104 + ... + 4184.

It is an arithmetic number, because the mean of its divisors is an integer number (515295).

Almost surely, 2^6542664 is an apocalyptic number.

It is an amenable number.

6542664 is an abundant number, since it is smaller than the sum of its proper divisors (9946776).

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

6542664 is a wasteful number, since it uses less digits than its factorization.

6542664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221 (or 2217 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 6542664 is about 2557.8631706954. The cubic root of 6542664 is about 187.0329853068.

The spelling of 6542664 in words is "six million, five hundred forty-two thousand, six hundred sixty-four".