109639680 has 192 divisors, whose sum is σ = 363242880. Its totient is φ = 28213248.

The previous prime is 109639667. The next prime is 109639687. The reversal of 109639680 is 86936901.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109639687) 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, 1320919 + ... + 1321001.

It is an arithmetic number, because the mean of its divisors is an integer number (1891890).

Almost surely, 2^109639680 is an apocalyptic number.

109639680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109639680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181621440).

109639680 is an abundant number, since it is smaller than the sum of its proper divisors (253603200).

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

109639680 is an equidigital number, since it uses as much as digits as its factorization.

109639680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 109639680 is about 10470.8968097293. The cubic root of 109639680 is about 478.6182484612.

The spelling of 109639680 in words is "one hundred nine million, six hundred thirty-nine thousand, six hundred eighty".