87865223 has 2 divisors, whose sum is σ = 87865224. Its totient is φ = 87865222.

The previous prime is 87865189. The next prime is 87865229. The reversal of 87865223 is 32256878.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87865223 - 2⁶ = 87865159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87865229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43932611 + 43932612.

It is an arithmetic number, because the mean of its divisors is an integer number (43932612).

Almost surely, 2^87865223 is an apocalyptic number.

87865223 is a deficient number, since it is larger than the sum of its proper divisors (1).

87865223 is an equidigital number, since it uses as much as digits as its factorization.

87865223 is an evil number, because the sum of its binary digits is even.

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

The square root of 87865223 is about 9373.6451287639. The cubic root of 87865223 is about 444.5688252967.

It can be divided in two parts, 87865 and 223, that added together give a palindrome (88088).

The spelling of 87865223 in words is "eighty-seven million, eight hundred sixty-five thousand, two hundred twenty-three".