87745859 has 2 divisors, whose sum is σ = 87745860. Its totient is φ = 87745858.

The previous prime is 87745837. The next prime is 87745873. The reversal of 87745859 is 95854778.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87745859 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 87745859.

It is not a weakly prime, because it can be changed into another prime (87745829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43872929 + 43872930.

It is an arithmetic number, because the mean of its divisors is an integer number (43872930).

Almost surely, 2^87745859 is an apocalyptic number.

87745859 is a deficient number, since it is larger than the sum of its proper divisors (1).

87745859 is an equidigital number, since it uses as much as digits as its factorization.

87745859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2822400, while the sum is 53.

The square root of 87745859 is about 9367.2759647616. The cubic root of 87745859 is about 444.3674200108.

The spelling of 87745859 in words is "eighty-seven million, seven hundred forty-five thousand, eight hundred fifty-nine".