72062761 has 2 divisors, whose sum is σ = 72062762. Its totient is φ = 72062760.

The previous prime is 72062759. The next prime is 72062803. The reversal of 72062761 is 16726027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68376361 + 3686400 = 8269^2 + 1920^2 .

It is a cyclic number.

It is not a de Polignac number, because 72062761 - 2¹ = 72062759 is a prime.

Together with 72062759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72062741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36031380 + 36031381.

It is an arithmetic number, because the mean of its divisors is an integer number (36031381).

Almost surely, 2^72062761 is an apocalyptic number.

It is an amenable number.

72062761 is a deficient number, since it is larger than the sum of its proper divisors (1).

72062761 is an equidigital number, since it uses as much as digits as its factorization.

72062761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 72062761 is about 8488.9787960626. The cubic root of 72062761 is about 416.1376074132.

Adding to 72062761 its reverse (16726027), we get a palindrome (88788788).

The spelling of 72062761 in words is "seventy-two million, sixty-two thousand, seven hundred sixty-one".