32690729 has 2 divisors, whose sum is σ = 32690730. Its totient is φ = 32690728.

The previous prime is 32690719. The next prime is 32690731. The reversal of 32690729 is 92709623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32228329 + 462400 = 5677^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 32690729 - 2²⁰ = 31642153 is a prime.

Together with 32690731, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 32690692 and 32690701.

It is not a weakly prime, because it can be changed into another prime (32690719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16345364 + 16345365.

It is an arithmetic number, because the mean of its divisors is an integer number (16345365).

Almost surely, 2^32690729 is an apocalyptic number.

It is an amenable number.

32690729 is a deficient number, since it is larger than the sum of its proper divisors (1).

32690729 is an equidigital number, since it uses as much as digits as its factorization.

32690729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 32690729 is about 5717.5806946645. The cubic root of 32690729 is about 319.7482688220.

The spelling of 32690729 in words is "thirty-two million, six hundred ninety thousand, seven hundred twenty-nine".