86208787 has 6 divisors (see below), whose sum is σ = 100283748. Its totient is φ = 73893204.

The previous prime is 86208781. The next prime is 86208791. The reversal of 86208787 is 78780268.

It is not a de Polignac number, because 86208787 - 2⁷ = 86208659 is a prime.

It is a super-2 number, since 2×86208787² = 14863909912022738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86208781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 879633 + ... + 879730.

It is an arithmetic number, because the mean of its divisors is an integer number (16713958).

Almost surely, 2^86208787 is an apocalyptic number.

86208787 is a deficient number, since it is larger than the sum of its proper divisors (14074961).

86208787 is a wasteful number, since it uses less digits than its factorization.

86208787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759377 (or 1759370 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 86208787 is about 9284.8687120497. The cubic root of 86208787 is about 441.7574117723.

The spelling of 86208787 in words is "eighty-six million, two hundred eight thousand, seven hundred eighty-seven".