6729081 has 4 divisors (see below), whose sum is σ = 8972112. Its totient is φ = 4486052.

The previous prime is 6729061. The next prime is 6729083. The reversal of 6729081 is 1809276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6729081 - 2⁶ = 6729017 is a prime.

It is a super-4 number, since 4×6729081⁴ (a number of 28 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6729083) 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, 1121511 + ... + 1121516.

It is an arithmetic number, because the mean of its divisors is an integer number (2243028).

Almost surely, 2^6729081 is an apocalyptic number.

It is an amenable number.

6729081 is a deficient number, since it is larger than the sum of its proper divisors (2243031).

6729081 is a wasteful number, since it uses less digits than its factorization.

6729081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2243030.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 6729081 is about 2594.0472239341. The cubic root of 6729081 is about 188.7927236884.

The spelling of 6729081 in words is "six million, seven hundred twenty-nine thousand, eighty-one".