6729690 has 32 divisors (see below), whose sum is σ = 17620416. Its totient is φ = 1631360.

The previous prime is 6729683. The next prime is 6729691. The reversal of 6729690 is 969276.

It is a super-2 number, since 2×6729690² = 90577454992200, which contains 22 as substring.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (6729691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9867 + ... + 10526.

It is an arithmetic number, because the mean of its divisors is an integer number (550638).

Almost surely, 2^6729690 is an apocalyptic number.

6729690 is an abundant number, since it is smaller than the sum of its proper divisors (10890726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6729690 is a wasteful number, since it uses less digits than its factorization.

6729690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20414.

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

The square root of 6729690 is about 2594.1646054173. The cubic root of 6729690 is about 188.7984189337.

Subtracting from 6729690 its product of nonzero digits (40824), we obtain a palindrome (6688866).

The spelling of 6729690 in words is "six million, seven hundred twenty-nine thousand, six hundred ninety".