72968047 has 2 divisors, whose sum is σ = 72968048. Its totient is φ = 72968046.

The previous prime is 72968023. The next prime is 72968081. The reversal of 72968047 is 74086927.

It is a weak prime.

It is an emirp because it is prime and its reverse (74086927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72968047 - 2⁷ = 72967919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72967994 and 72968012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72968087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36484023 + 36484024.

It is an arithmetic number, because the mean of its divisors is an integer number (36484024).

Almost surely, 2^72968047 is an apocalyptic number.

72968047 is a deficient number, since it is larger than the sum of its proper divisors (1).

72968047 is an equidigital number, since it uses as much as digits as its factorization.

72968047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 72968047 is about 8542.1336327641. The cubic root of 72968047 is about 417.8729324626.

The spelling of 72968047 in words is "seventy-two million, nine hundred sixty-eight thousand, forty-seven".