87716693 has 4 divisors (see below), whose sum is σ = 87739788. Its totient is φ = 87693600.

The previous prime is 87716669. The next prime is 87716729. The reversal of 87716693 is 39661778.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32467204 + 55249489 = 5698^2 + 7433^2 .

It is a cyclic number.

It is not a de Polignac number, because 87716693 - 2²² = 83522389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87716593) 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, 4358 + ... + 13943.

It is an arithmetic number, because the mean of its divisors is an integer number (21934947).

Almost surely, 2^87716693 is an apocalyptic number.

It is an amenable number.

87716693 is a deficient number, since it is larger than the sum of its proper divisors (23095).

87716693 is a wasteful number, since it uses less digits than its factorization.

87716693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23094.

The product of its digits is 381024, while the sum is 47.

The square root of 87716693 is about 9365.7190327278. The cubic root of 87716693 is about 444.3181798660.

The spelling of 87716693 in words is "eighty-seven million, seven hundred sixteen thousand, six hundred ninety-three".