87716677 has 8 divisors (see below), whose sum is σ = 93195000. Its totient is φ = 82401984.

The previous prime is 87716669. The next prime is 87716729. The reversal of 87716677 is 77661778.

It can be written as a sum of positive squares in 4 ways, for example, as 8755681 + 78960996 = 2959^2 + 8886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87716677 - 2³ = 87716669 is a prime.

It is a super-4 number, since 4×87716677⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87716677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87716647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39802 + ... + 41947.

It is an arithmetic number, because the mean of its divisors is an integer number (11649375).

Almost surely, 2^87716677 is an apocalyptic number.

It is an amenable number.

87716677 is a deficient number, since it is larger than the sum of its proper divisors (5478323).

87716677 is a wasteful number, since it uses less digits than its factorization.

87716677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81815.

The product of its digits is 691488, while the sum is 49.

The square root of 87716677 is about 9365.7181785488. The cubic root of 87716677 is about 444.3181528507.

The spelling of 87716677 in words is "eighty-seven million, seven hundred sixteen thousand, six hundred seventy-seven".