108639067 has 4 divisors (see below), whose sum is σ = 111575296. Its totient is φ = 105702840.

The previous prime is 108639059. The next prime is 108639071. The reversal of 108639067 is 760936801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 760936801 = 691 ⋅1101211.

It is a cyclic number.

It is not a de Polignac number, because 108639067 - 2³ = 108639059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108639077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1468059 + ... + 1468132.

It is an arithmetic number, because the mean of its divisors is an integer number (27893824).

Almost surely, 2^108639067 is an apocalyptic number.

108639067 is a deficient number, since it is larger than the sum of its proper divisors (2936229).

108639067 is an equidigital number, since it uses as much as digits as its factorization.

108639067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936228.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 108639067 is about 10423.0066199730. The cubic root of 108639067 is about 477.1577797001.

The spelling of 108639067 in words is "one hundred eight million, six hundred thirty-nine thousand, sixty-seven".