109216660 has 24 divisors (see below), whose sum is σ = 262120320. Its totient is φ = 37445664.

The previous prime is 109216651. The next prime is 109216699. The reversal of 109216660 is 66612901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 389920 + ... + 390199.

It is an arithmetic number, because the mean of its divisors is an integer number (10921680).

Almost surely, 2^109216660 is an apocalyptic number.

109216660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109216660 is an abundant number, since it is smaller than the sum of its proper divisors (152903660).

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

109216660 is a wasteful number, since it uses less digits than its factorization.

109216660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780135 (or 780133 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 109216660 is about 10450.6774900003. The cubic root of 109216660 is about 478.0019082223.

The spelling of 109216660 in words is "one hundred nine million, two hundred sixteen thousand, six hundred sixty".