72836737 has 2 divisors, whose sum is σ = 72836738. Its totient is φ = 72836736.

The previous prime is 72836723. The next prime is 72836741. The reversal of 72836737 is 73763827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49787136 + 23049601 = 7056^2 + 4801^2 .

It is an emirp because it is prime and its reverse (73763827) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72836737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72836693 and 72836702.

It is not a weakly prime, because it can be changed into another prime (72836717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36418368 + 36418369.

It is an arithmetic number, because the mean of its divisors is an integer number (36418369).

Almost surely, 2^72836737 is an apocalyptic number.

It is an amenable number.

72836737 is a deficient number, since it is larger than the sum of its proper divisors (1).

72836737 is an equidigital number, since it uses as much as digits as its factorization.

72836737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 43.

The square root of 72836737 is about 8534.4441529604. Note that the first 3 decimals coincide. The cubic root of 72836737 is about 417.6221202036.

The spelling of 72836737 in words is "seventy-two million, eight hundred thirty-six thousand, seven hundred thirty-seven".