86868749 has 16 divisors (see below), whose sum is σ = 97511040. Its totient is φ = 76714560.

The previous prime is 86868701. The next prime is 86868751. The reversal of 86868749 is 94786868.

It is a cyclic number.

It is not a de Polignac number, because 86868749 - 2¹² = 86864653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86868694 and 86868703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86868799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62864 + ... + 64230.

It is an arithmetic number, because the mean of its divisors is an integer number (6094440).

Almost surely, 2^86868749 is an apocalyptic number.

It is an amenable number.

86868749 is a deficient number, since it is larger than the sum of its proper divisors (10642291).

86868749 is a wasteful number, since it uses less digits than its factorization.

86868749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540.

The product of its digits is 4644864, while the sum is 56.

The square root of 86868749 is about 9320.3406053642. The cubic root of 86868749 is about 442.8818226522.

The spelling of 86868749 in words is "eighty-six million, eight hundred sixty-eight thousand, seven hundred forty-nine".