736738861 has 2 divisors, whose sum is σ = 736738862. Its totient is φ = 736738860.

The previous prime is 736738859. The next prime is 736738897. The reversal of 736738861 is 168837637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 466300836 + 270438025 = 21594^2 + 16445^2 .

It is an emirp because it is prime and its reverse (168837637) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 736738861 - 2¹ = 736738859 is a prime.

Together with 736738859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (736735861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 368369430 + 368369431.

It is an arithmetic number, because the mean of its divisors is an integer number (368369431).

Almost surely, 2^736738861 is an apocalyptic number.

It is an amenable number.

736738861 is a deficient number, since it is larger than the sum of its proper divisors (1).

736738861 is an equidigital number, since it uses as much as digits as its factorization.

736738861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 49.

The square root of 736738861 is about 27142.9339055306. The cubic root of 736738861 is about 903.1735131022.

The spelling of 736738861 in words is "seven hundred thirty-six million, seven hundred thirty-eight thousand, eight hundred sixty-one".