108477861 has 4 divisors (see below), whose sum is σ = 144637152. Its totient is φ = 72318572.

The previous prime is 108477839. The next prime is 108477871. The reversal of 108477861 is 168774801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 108477861 - 2¹⁵ = 108445093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108477871) 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, 18079641 + ... + 18079646.

It is an arithmetic number, because the mean of its divisors is an integer number (36159288).

Almost surely, 2^108477861 is an apocalyptic number.

It is an amenable number.

108477861 is a deficient number, since it is larger than the sum of its proper divisors (36159291).

108477861 is an equidigital number, since it uses as much as digits as its factorization.

108477861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36159290.

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 108477861 is about 10415.2705677769. The cubic root of 108477861 is about 476.9216498643.

The spelling of 108477861 in words is "one hundred eight million, four hundred seventy-seven thousand, eight hundred sixty-one".