6542659 has 4 divisors (see below), whose sum is σ = 6594304. Its totient is φ = 6491016.

The previous prime is 6542647. The next prime is 6542681. The reversal of 6542659 is 9562456.

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 6542659 - 2⁷ = 6542531 is a prime.

It is a d-powerful number, because it can be written as 6² + 5⁹ + 4 + 2²¹ + 6⁵ + 5⁹ + 9⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6542609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25632 + ... + 25885.

It is an arithmetic number, because the mean of its divisors is an integer number (1648576).

Almost surely, 2^6542659 is an apocalyptic number.

6542659 is a deficient number, since it is larger than the sum of its proper divisors (51645).

6542659 is a wasteful number, since it uses less digits than its factorization.

6542659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51644.

The product of its digits is 64800, while the sum is 37.

The square root of 6542659 is about 2557.8621933169. The cubic root of 6542659 is about 187.0329376623.

It can be divided in two parts, 65 and 42659, that added together give a palindrome (42724).

The spelling of 6542659 in words is "six million, five hundred forty-two thousand, six hundred fifty-nine".