108623405 has 16 divisors (see below), whose sum is σ = 143510400. Its totient is φ = 78269760.

The previous prime is 108623381. The next prime is 108623407. The reversal of 108623405 is 504326801.

It is a de Polignac number, because none of the positive numbers 2^k-108623405 is a prime.

It is a super-2 number, since 2×108623405² = 23598088227588050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108623407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3065 + ... + 15054.

It is an arithmetic number, because the mean of its divisors is an integer number (8969400).

Almost surely, 2^108623405 is an apocalyptic number.

It is an amenable number.

108623405 is a deficient number, since it is larger than the sum of its proper divisors (34886995).

108623405 is a wasteful number, since it uses less digits than its factorization.

108623405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18244.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 108623405 is about 10422.2552741717. The cubic root of 108623405 is about 477.1348487094.

The spelling of 108623405 in words is "one hundred eight million, six hundred twenty-three thousand, four hundred five".