108440613 has 20 divisors (see below), whose sum is σ = 165947628. Its totient is φ = 70528320.

The previous prime is 108440611. The next prime is 108440627. The reversal of 108440613 is 316044801.

108440613 is a `hidden beast` number, since 1 + 0 + 8 + 4 + 40 + 613 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20493729 + 87946884 = 4527^2 + 9378^2 .

It is not a de Polignac number, because 108440613 - 2¹ = 108440611 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108440611) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13006 + ... + 19647.

Almost surely, 2^108440613 is an apocalyptic number.

It is an amenable number.

108440613 is a deficient number, since it is larger than the sum of its proper divisors (57507015).

108440613 is an equidigital number, since it uses as much as digits as its factorization.

108440613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32706 (or 32697 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 108440613 is about 10413.4822705952. The cubic root of 108440613 is about 476.8670568162.

The spelling of 108440613 in words is "one hundred eight million, four hundred forty thousand, six hundred thirteen".