72013847 has 2 divisors, whose sum is σ = 72013848. Its totient is φ = 72013846.

The previous prime is 72013801. The next prime is 72013849. The reversal of 72013847 is 74831027.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72013847 - 2¹⁶ = 71948311 is a prime.

Together with 72013849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72013849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36006923 + 36006924.

It is an arithmetic number, because the mean of its divisors is an integer number (36006924).

Almost surely, 2^72013847 is an apocalyptic number.

72013847 is a deficient number, since it is larger than the sum of its proper divisors (1).

72013847 is an equidigital number, since it uses as much as digits as its factorization.

72013847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 72013847 is about 8486.0972773119. The cubic root of 72013847 is about 416.0434322719.

The spelling of 72013847 in words is "seventy-two million, thirteen thousand, eight hundred forty-seven".