72436061 has 2 divisors, whose sum is σ = 72436062. Its totient is φ = 72436060.

The previous prime is 72435991. The next prime is 72436073. The reversal of 72436061 is 16063427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67551961 + 4884100 = 8219^2 + 2210^2 .

It is an emirp because it is prime and its reverse (16063427) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72436061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72436261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36218030 + 36218031.

It is an arithmetic number, because the mean of its divisors is an integer number (36218031).

Almost surely, 2^72436061 is an apocalyptic number.

It is an amenable number.

72436061 is a deficient number, since it is larger than the sum of its proper divisors (1).

72436061 is an equidigital number, since it uses as much as digits as its factorization.

72436061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 72436061 is about 8510.9377274188. The cubic root of 72436061 is about 416.8549298217.

Adding to 72436061 its reverse (16063427), we get a palindrome (88499488).

The spelling of 72436061 in words is "seventy-two million, four hundred thirty-six thousand, sixty-one".