108861507 has 48 divisors (see below), whose sum is σ = 175219200. Its totient is φ = 64817280.

The previous prime is 108861503. The next prime is 108861517. The reversal of 108861507 is 705168801.

108861507 is a `hidden beast` number, since 10 + 88 + 61 + 507 = 666.

It is not a de Polignac number, because 108861507 - 2² = 108861503 is a prime.

It is a super-2 number, since 2×108861507² = 23701655412622098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108861503) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 349882 + ... + 350192.

It is an arithmetic number, because the mean of its divisors is an integer number (3650400).

Almost surely, 2^108861507 is an apocalyptic number.

108861507 is a deficient number, since it is larger than the sum of its proper divisors (66357693).

108861507 is a wasteful number, since it uses less digits than its factorization.

108861507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 108861507 is about 10433.6717889725. The cubic root of 108861507 is about 477.4832200823.

The spelling of 108861507 in words is "one hundred eight million, eight hundred sixty-one thousand, five hundred seven".