87759563 has 2 divisors, whose sum is σ = 87759564. Its totient is φ = 87759562.

The previous prime is 87759547. The next prime is 87759569. The reversal of 87759563 is 36595778.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87759563 - 2⁴ = 87759547 is a prime.

It is not a weakly prime, because it can be changed into another prime (87759569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43879781 + 43879782.

It is an arithmetic number, because the mean of its divisors is an integer number (43879782).

Almost surely, 2^87759563 is an apocalyptic number.

87759563 is a deficient number, since it is larger than the sum of its proper divisors (1).

87759563 is an equidigital number, since it uses as much as digits as its factorization.

87759563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 50.

The square root of 87759563 is about 9368.0074188698. The cubic root of 87759563 is about 444.3905523242.

The spelling of 87759563 in words is "eighty-seven million, seven hundred fifty-nine thousand, five hundred sixty-three".