72086213 has 2 divisors, whose sum is σ = 72086214. Its totient is φ = 72086212.

The previous prime is 72086207. The next prime is 72086269. The reversal of 72086213 is 31268027.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58262689 + 13823524 = 7633^2 + 3718^2 .

It is a cyclic number.

It is not a de Polignac number, because 72086213 - 2⁴ = 72086197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72088213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36043106 + 36043107.

It is an arithmetic number, because the mean of its divisors is an integer number (36043107).

Almost surely, 2^72086213 is an apocalyptic number.

It is an amenable number.

72086213 is a deficient number, since it is larger than the sum of its proper divisors (1).

72086213 is an equidigital number, since it uses as much as digits as its factorization.

72086213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 72086213 is about 8490.3600041459. The cubic root of 72086213 is about 416.1827449228.

The spelling of 72086213 in words is "seventy-two million, eighty-six thousand, two hundred thirteen".