86782075 has 6 divisors (see below), whose sum is σ = 107609804. Its totient is φ = 69425640.

The previous prime is 86782049. The next prime is 86782099. The reversal of 86782075 is 57028768.

It is a happy number.

It is not a de Polignac number, because 86782075 - 2⁵ = 86782043 is a prime.

It is a super-2 number, since 2×86782075² = 15062257082611250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1735617 + ... + 1735666.

Almost surely, 2^86782075 is an apocalyptic number.

86782075 is a deficient number, since it is larger than the sum of its proper divisors (20827729).

86782075 is a wasteful number, since it uses less digits than its factorization.

86782075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471293 (or 3471288 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 86782075 is about 9315.6897221838. The cubic root of 86782075 is about 442.7344773242.

The spelling of 86782075 in words is "eighty-six million, seven hundred eighty-two thousand, seventy-five".