109571616 has 336 divisors, whose sum is σ = 409848768. Its totient is φ = 27993600.

The previous prime is 109571593. The next prime is 109571621. The reversal of 109571616 is 616175901.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (336).

It is a super-3 number, since 3×109571616³ (a number of 25 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1796226 + ... + 1796286.

It is an arithmetic number, because the mean of its divisors is an integer number (1219788).

Almost surely, 2^109571616 is an apocalyptic number.

109571616 is a gapful number since it is divisible by the number (16) 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 109571616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204924384).

109571616 is an abundant number, since it is smaller than the sum of its proper divisors (300277152).

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

109571616 is an equidigital number, since it uses as much as digits as its factorization.

109571616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 109571616 is about 10467.6461537444. The cubic root of 109571616 is about 478.5191863456.

The spelling of 109571616 in words is "one hundred nine million, five hundred seventy-one thousand, six hundred sixteen".