109643616 has 36 divisors (see below), whose sum is σ = 311799852. Its totient is φ = 36547776.

The previous prime is 109643609. The next prime is 109643641. The reversal of 109643616 is 616346901.

109643616 is a `hidden beast` number, since 1 + 0 + 9 + 643 + 6 + 1 + 6 = 666.

109643616 is nontrivially palindromic in base 11.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190066 + ... + 190641.

It is an arithmetic number, because the mean of its divisors is an integer number (8661107).

Almost surely, 2^109643616 is an apocalyptic number.

109643616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

109643616 is an abundant number, since it is smaller than the sum of its proper divisors (202156236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

109643616 is a wasteful number, since it uses less digits than its factorization.

109643616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380723 (or 380712 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 109643616 is about 10471.0847575597. The cubic root of 109643616 is about 478.6239757638.

The spelling of 109643616 in words is "one hundred nine million, six hundred forty-three thousand, six hundred sixteen".