72276713 has 4 divisors (see below), whose sum is σ = 72293760. Its totient is φ = 72259668.

The previous prime is 72276709. The next prime is 72276731. The reversal of 72276713 is 31767227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31767227 = 101 ⋅314527.

It is a cyclic number.

It is not a de Polignac number, because 72276713 - 2² = 72276709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72276733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3356 + ... + 12482.

It is an arithmetic number, because the mean of its divisors is an integer number (18073440).

Almost surely, 2^72276713 is an apocalyptic number.

It is an amenable number.

72276713 is a deficient number, since it is larger than the sum of its proper divisors (17047).

72276713 is an equidigital number, since it uses as much as digits as its factorization.

72276713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17046.

The product of its digits is 24696, while the sum is 35.

The square root of 72276713 is about 8501.5712077239. The cubic root of 72276713 is about 416.5490335308.

The spelling of 72276713 in words is "seventy-two million, two hundred seventy-six thousand, seven hundred thirteen".