72072863 has 2 divisors, whose sum is σ = 72072864. Its totient is φ = 72072862.

The previous prime is 72072857. The next prime is 72072899. The reversal of 72072863 is 36827027.

It is a weak prime.

It is an emirp because it is prime and its reverse (36827027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72072863 - 2⁸ = 72072607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72072563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36036431 + 36036432.

It is an arithmetic number, because the mean of its divisors is an integer number (36036432).

Almost surely, 2^72072863 is an apocalyptic number.

72072863 is a deficient number, since it is larger than the sum of its proper divisors (1).

72072863 is an equidigital number, since it uses as much as digits as its factorization.

72072863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 72072863 is about 8489.5737819987. The cubic root of 72072863 is about 416.1570516941.

The spelling of 72072863 in words is "seventy-two million, seventy-two thousand, eight hundred sixty-three".