36719729 has 2 divisors, whose sum is σ = 36719730. Its totient is φ = 36719728.

The previous prime is 36719719. The next prime is 36719731. The reversal of 36719729 is 92791763.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36626704 + 93025 = 6052^2 + 305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36719729 is a prime.

Together with 36719731, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36719729.

It is not a weakly prime, because it can be changed into another prime (36719719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18359864 + 18359865.

It is an arithmetic number, because the mean of its divisors is an integer number (18359865).

Almost surely, 2^36719729 is an apocalyptic number.

It is an amenable number.

36719729 is a deficient number, since it is larger than the sum of its proper divisors (1).

36719729 is an equidigital number, since it uses as much as digits as its factorization.

36719729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 44.

The square root of 36719729 is about 6059.6806021440. The cubic root of 36719729 is about 332.3786777304.

The spelling of 36719729 in words is "thirty-six million, seven hundred nineteen thousand, seven hundred twenty-nine".