72078863 has 2 divisors, whose sum is σ = 72078864. Its totient is φ = 72078862.

The previous prime is 72078859. The next prime is 72078869. The reversal of 72078863 is 36887027.

It is a weak prime.

It is an emirp because it is prime and its reverse (36887027) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72078863 - 2² = 72078859 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72078863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72078869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36039431 + 36039432.

It is an arithmetic number, because the mean of its divisors is an integer number (36039432).

Almost surely, 2^72078863 is an apocalyptic number.

72078863 is a deficient number, since it is larger than the sum of its proper divisors (1).

72078863 is an equidigital number, since it uses as much as digits as its factorization.

72078863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 72078863 is about 8489.9271492752. The cubic root of 72078863 is about 416.1685996051.

The spelling of 72078863 in words is "seventy-two million, seventy-eight thousand, eight hundred sixty-three".