729686927 has 2 divisors, whose sum is σ = 729686928. Its totient is φ = 729686926.

The previous prime is 729686863. The next prime is 729686929.

It is a happy number.

729686927 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 729686927 - 2⁶ = 729686863 is a prime.

It is a super-2 number, since 2×729686927² = 1064886022869406658, which contains 22 as substring.

Together with 729686929, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729686929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364843463 + 364843464.

It is an arithmetic number, because the mean of its divisors is an integer number (364843464).

Almost surely, 2^729686927 is an apocalyptic number.

729686927 is a deficient number, since it is larger than the sum of its proper divisors (1).

729686927 is an equidigital number, since it uses as much as digits as its factorization.

729686927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 56.

The square root of 729686927 is about 27012.7178751047. The cubic root of 729686927 is about 900.2825972643.

The spelling of 729686927 in words is "seven hundred twenty-nine million, six hundred eighty-six thousand, nine hundred twenty-seven".