72858887 has 2 divisors, whose sum is σ = 72858888. Its totient is φ = 72858886.

The previous prime is 72858857. The next prime is 72858913. The reversal of 72858887 is 78885827.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78885827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72858887 - 2¹⁸ = 72596743 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72858857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36429443 + 36429444.

It is an arithmetic number, because the mean of its divisors is an integer number (36429444).

Almost surely, 2^72858887 is an apocalyptic number.

72858887 is a deficient number, since it is larger than the sum of its proper divisors (1).

72858887 is an equidigital number, since it uses as much as digits as its factorization.

72858887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2007040, while the sum is 53.

The square root of 72858887 is about 8535.7417369553. The cubic root of 72858887 is about 417.6644495409.

The spelling of 72858887 in words is "seventy-two million, eight hundred fifty-eight thousand, eight hundred eighty-seven".