6906729786 has 32 divisors (see below), whose sum is σ = 15862348800. Its totient is φ = 1982792880.

The previous prime is 6906729769. The next prime is 6906729793. The reversal of 6906729786 is 6879276096.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2752626 + ... + 2755133.

It is an arithmetic number, because the mean of its divisors is an integer number (495698400).

Almost surely, 2^6906729786 is an apocalyptic number.

6906729786 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6906729786 is an abundant number, since it is smaller than the sum of its proper divisors (8955619014).

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

6906729786 is a wasteful number, since it uses less digits than its factorization.

6906729786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507794.

The product of its (nonzero) digits is 13716864, while the sum is 60.

The square root of 6906729786 is about 83106.7373081148. The cubic root of 6906729786 is about 1904.3969990275.

The spelling of 6906729786 in words is "six billion, nine hundred six million, seven hundred twenty-nine thousand, seven hundred eighty-six".