72858613 has 2 divisors, whose sum is σ = 72858614. Its totient is φ = 72858612.

The previous prime is 72858589. The next prime is 72858637. The reversal of 72858613 is 31685827.

It is a balanced prime because it is at equal distance from previous prime (72858589) and next prime (72858637).

It can be written as a sum of positive squares in only one way, i.e., 53831569 + 19027044 = 7337^2 + 4362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72858613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72858913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36429306 + 36429307.

It is an arithmetic number, because the mean of its divisors is an integer number (36429307).

Almost surely, 2^72858613 is an apocalyptic number.

It is an amenable number.

72858613 is a deficient number, since it is larger than the sum of its proper divisors (1).

72858613 is an equidigital number, since it uses as much as digits as its factorization.

72858613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 40.

The square root of 72858613 is about 8535.7256867826. The cubic root of 72858613 is about 417.6639259708.

The spelling of 72858613 in words is "seventy-two million, eight hundred fifty-eight thousand, six hundred thirteen".