86866868 has 36 divisors (see below), whose sum is σ = 168842436. Its totient is φ = 39072000.

The previous prime is 86866859. The next prime is 86866877.

86866868 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (86866859) and next prime (86866877).

It can be written as a sum of positive squares in 2 ways, for example, as 67699984 + 19166884 = 8228^2 + 4378^2 .

It is a super-2 number, since 2×86866868² = 15091705512258848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47996 + ... + 49772.

Almost surely, 2^86866868 is an apocalyptic number.

It is an amenable number.

86866868 is a deficient number, since it is larger than the sum of its proper divisors (81975568).

86866868 is a wasteful number, since it uses less digits than its factorization.

86866868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904 (or 1891 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 56.

The square root of 86866868 is about 9320.2396964885. The cubic root of 86866868 is about 442.8786260031.

The spelling of 86866868 in words is "eighty-six million, eight hundred sixty-six thousand, eight hundred sixty-eight".