87045863 has 2 divisors, whose sum is σ = 87045864. Its totient is φ = 87045862.

The previous prime is 87045851. The next prime is 87045883. The reversal of 87045863 is 36854078.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87045863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87045863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87045883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43522931 + 43522932.

It is an arithmetic number, because the mean of its divisors is an integer number (43522932).

Almost surely, 2^87045863 is an apocalyptic number.

87045863 is a deficient number, since it is larger than the sum of its proper divisors (1).

87045863 is an equidigital number, since it uses as much as digits as its factorization.

87045863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 87045863 is about 9329.8372440252. The cubic root of 87045863 is about 443.1826109960.

The spelling of 87045863 in words is "eighty-seven million, forty-five thousand, eight hundred sixty-three".