86687998 has 8 divisors (see below), whose sum is σ = 137680992. Its totient is φ = 40794336.

The previous prime is 86687987. The next prime is 86687999. The reversal of 86687998 is 89978668.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86687999) 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, 1274790 + ... + 1274857.

It is an arithmetic number, because the mean of its divisors is an integer number (17210124).

Almost surely, 2^86687998 is an apocalyptic number.

86687998 is a deficient number, since it is larger than the sum of its proper divisors (50992994).

86687998 is a wasteful number, since it uses less digits than its factorization.

86687998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549666.

The product of its digits is 10450944, while the sum is 61.

The square root of 86687998 is about 9310.6389684060. The cubic root of 86687998 is about 442.5744358591.

The spelling of 86687998 in words is "eighty-six million, six hundred eighty-seven thousand, nine hundred ninety-eight".