72800737 has 2 divisors, whose sum is σ = 72800738. Its totient is φ = 72800736.

The previous prime is 72800713. The next prime is 72800753. The reversal of 72800737 is 73700827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37564641 + 35236096 = 6129^2 + 5936^2 .

It is an emirp because it is prime and its reverse (73700827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72800737 - 2¹¹ = 72798689 is a prime.

It is not a weakly prime, because it can be changed into another prime (72800797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36400368 + 36400369.

It is an arithmetic number, because the mean of its divisors is an integer number (36400369).

Almost surely, 2^72800737 is an apocalyptic number.

It is an amenable number.

72800737 is a deficient number, since it is larger than the sum of its proper divisors (1).

72800737 is an equidigital number, since it uses as much as digits as its factorization.

72800737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 72800737 is about 8532.3347918375. The cubic root of 72800737 is about 417.5533047744.

It can be divided in two parts, 72800 and 737, that added together give a palindrome (73537).

The spelling of 72800737 in words is "seventy-two million, eight hundred thousand, seven hundred thirty-seven".