72868963 has 2 divisors, whose sum is σ = 72868964. Its totient is φ = 72868962.

The previous prime is 72868903. The next prime is 72869023. The reversal of 72868963 is 36986827.

It is a balanced prime because it is at equal distance from previous prime (72868903) and next prime (72869023).

It is an emirp because it is prime and its reverse (36986827) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72868963 is a prime.

It is not a weakly prime, because it can be changed into another prime (72868903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36434481 + 36434482.

It is an arithmetic number, because the mean of its divisors is an integer number (36434482).

Almost surely, 2^72868963 is an apocalyptic number.

72868963 is a deficient number, since it is larger than the sum of its proper divisors (1).

72868963 is an equidigital number, since it uses as much as digits as its factorization.

72868963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 72868963 is about 8536.3319405937. The cubic root of 72868963 is about 417.6837022507.

The spelling of 72868963 in words is "seventy-two million, eight hundred sixty-eight thousand, nine hundred sixty-three".