72859487 has 2 divisors, whose sum is σ = 72859488. Its totient is φ = 72859486.

The previous prime is 72859459. The next prime is 72859511. The reversal of 72859487 is 78495827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72859487 - 2⁸ = 72859231 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 (72859427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36429743 + 36429744.

It is an arithmetic number, because the mean of its divisors is an integer number (36429744).

Almost surely, 2^72859487 is an apocalyptic number.

72859487 is a deficient number, since it is larger than the sum of its proper divisors (1).

72859487 is an equidigital number, since it uses as much as digits as its factorization.

72859487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 50.

The square root of 72859487 is about 8535.7768832134. The cubic root of 72859487 is about 417.6655960402.

The spelling of 72859487 in words is "seventy-two million, eight hundred fifty-nine thousand, four hundred eighty-seven".