6542729 has 8 divisors (see below), whose sum is σ = 6749568. Its totient is φ = 6338800.

The previous prime is 6542717. The next prime is 6542737. The reversal of 6542729 is 9272456.

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

It is a cyclic number.

It is not a de Polignac number, because 6542729 - 2⁴ = 6542713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6542749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4379 + ... + 5679.

It is an arithmetic number, because the mean of its divisors is an integer number (843696).

Almost surely, 2^6542729 is an apocalyptic number.

It is an amenable number.

6542729 is a deficient number, since it is larger than the sum of its proper divisors (206839).

6542729 is a wasteful number, since it uses less digits than its factorization.

6542729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455.

The product of its digits is 30240, while the sum is 35.

The square root of 6542729 is about 2557.8758765820. The cubic root of 6542729 is about 187.0336046826.

It can be divided in two parts, 65427 and 29, that added together give a palindrome (65456).

The spelling of 6542729 in words is "six million, five hundred forty-two thousand, seven hundred twenty-nine".