6542015 has 4 divisors (see below), whose sum is σ = 7850424. Its totient is φ = 5233608.

The previous prime is 6541999. The next prime is 6542021. The reversal of 6542015 is 5102456.

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

It is a cyclic number.

It is not a de Polignac number, because 6542015 - 2⁴ = 6541999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 654197 + ... + 654206.

It is an arithmetic number, because the mean of its divisors is an integer number (1962606).

Almost surely, 2^6542015 is an apocalyptic number.

6542015 is a deficient number, since it is larger than the sum of its proper divisors (1308409).

6542015 is a wasteful number, since it uses less digits than its factorization.

6542015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308408.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 6542015 is about 2557.7363038437. The cubic root of 6542015 is about 187.0268008524.

The spelling of 6542015 in words is "six million, five hundred forty-two thousand, fifteen".