729666863 has 2 divisors, whose sum is σ = 729666864. Its totient is φ = 729666862.

The previous prime is 729666859. The next prime is 729666887. The reversal of 729666863 is 368666927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 729666863 - 2² = 729666859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729666893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364833431 + 364833432.

It is an arithmetic number, because the mean of its divisors is an integer number (364833432).

Almost surely, 2^729666863 is an apocalyptic number.

729666863 is a deficient number, since it is larger than the sum of its proper divisors (1).

729666863 is an equidigital number, since it uses as much as digits as its factorization.

729666863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 53.

The square root of 729666863 is about 27012.3464919285. The cubic root of 729666863 is about 900.2743455813.

The spelling of 729666863 in words is "seven hundred twenty-nine million, six hundred sixty-six thousand, eight hundred sixty-three".