72847651 has 2 divisors, whose sum is σ = 72847652. Its totient is φ = 72847650.

The previous prime is 72847637. The next prime is 72847667. The reversal of 72847651 is 15674827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72847651 - 2⁹ = 72847139 is a prime.

It is not a weakly prime, because it can be changed into another prime (72847631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36423825 + 36423826.

It is an arithmetic number, because the mean of its divisors is an integer number (36423826).

Almost surely, 2^72847651 is an apocalyptic number.

72847651 is a deficient number, since it is larger than the sum of its proper divisors (1).

72847651 is an equidigital number, since it uses as much as digits as its factorization.

72847651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 72847651 is about 8535.0835379626. The cubic root of 72847651 is about 417.6429782686.

The spelling of 72847651 in words is "seventy-two million, eight hundred forty-seven thousand, six hundred fifty-one".