699080729 has 2 divisors, whose sum is σ = 699080730. Its totient is φ = 699080728.

The previous prime is 699080719. The next prime is 699080761. The reversal of 699080729 is 927080996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510760000 + 188320729 = 22600^2 + 13723^2 .

It is a cyclic number.

It is not a de Polignac number, because 699080729 - 2¹⁶ = 699015193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (699080719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349540364 + 349540365.

It is an arithmetic number, because the mean of its divisors is an integer number (349540365).

Almost surely, 2^699080729 is an apocalyptic number.

It is an amenable number.

699080729 is a deficient number, since it is larger than the sum of its proper divisors (1).

699080729 is an equidigital number, since it uses as much as digits as its factorization.

699080729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 699080729 is about 26440.1348143310. The cubic root of 699080729 is about 887.5151531897.

The spelling of 699080729 in words is "six hundred ninety-nine million, eighty thousand, seven hundred twenty-nine".