87729563 has 4 divisors (see below), whose sum is σ = 87768000. Its totient is φ = 87691128.

The previous prime is 87729557. The next prime is 87729569. The reversal of 87729563 is 36592778.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (87729557) and next prime (87729569).

It is a cyclic number.

It is not a de Polignac number, because 87729563 - 2¹² = 87725467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87729569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15563 + ... + 20436.

It is an arithmetic number, because the mean of its divisors is an integer number (21942000).

Almost surely, 2^87729563 is an apocalyptic number.

87729563 is a deficient number, since it is larger than the sum of its proper divisors (38437).

87729563 is a wasteful number, since it uses less digits than its factorization.

87729563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38436.

The product of its digits is 635040, while the sum is 47.

The square root of 87729563 is about 9366.4060877158. The cubic root of 87729563 is about 444.3399092736.

The spelling of 87729563 in words is "eighty-seven million, seven hundred twenty-nine thousand, five hundred sixty-three".