6906729 has 4 divisors (see below), whose sum is σ = 9208976. Its totient is φ = 4604484.

The previous prime is 6906719. The next prime is 6906761. The reversal of 6906729 is 9276096.

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 not a de Polignac number, because 6906729 - 2⁹ = 6906217 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 9³ + 0 + 6⁵ + 7⁵ + 2²¹ + 9⁷ .

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6906719) 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, 1151119 + ... + 1151124.

It is an arithmetic number, because the mean of its divisors is an integer number (2302244).

Almost surely, 2^6906729 is an apocalyptic number.

It is an amenable number.

6906729 is a deficient number, since it is larger than the sum of its proper divisors (2302247).

6906729 is a wasteful number, since it uses less digits than its factorization.

6906729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302246.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 6906729 is about 2628.0656384497. The cubic root of 6906729 is about 190.4396926786.

It can be divided in two parts, 69067 and 29, that added together give a palindrome (69096).

The spelling of 6906729 in words is "six million, nine hundred six thousand, seven hundred twenty-nine".