87677681 has 8 divisors (see below), whose sum is σ = 107911104. Its totient is φ = 69371280.

The previous prime is 87677677. The next prime is 87677683. The reversal of 87677681 is 18677678.

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 87677681 - 2² = 87677677 is a prime.

It is a super-2 number, since 2×87677681² = 15374751491075522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87677683) 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, 481655 + ... + 481836.

It is an arithmetic number, because the mean of its divisors is an integer number (13488888).

Almost surely, 2^87677681 is an apocalyptic number.

It is an amenable number.

87677681 is a deficient number, since it is larger than the sum of its proper divisors (20233423).

87677681 is a wasteful number, since it uses less digits than its factorization.

87677681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963511.

The product of its digits is 790272, while the sum is 50.

The square root of 87677681 is about 9363.6360992939. The cubic root of 87677681 is about 444.2522999269.

The spelling of 87677681 in words is "eighty-seven million, six hundred seventy-seven thousand, six hundred eighty-one".