109666854 has 24 divisors (see below), whose sum is σ = 259213032. Its totient is φ = 33232320.

The previous prime is 109666819. The next prime is 109666859. The reversal of 109666854 is 458666901.

Added to its reverse (458666901) it gives a triangular number (568333755 = T₃₃₇₁₄).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109666859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 276739 + ... + 277134.

It is an arithmetic number, because the mean of its divisors is an integer number (10800543).

Almost surely, 2^109666854 is an apocalyptic number.

109666854 is an abundant number, since it is smaller than the sum of its proper divisors (149546178).

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

109666854 is a wasteful number, since it uses less digits than its factorization.

109666854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553892 (or 553889 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 109666854 is about 10472.1943259281. The cubic root of 109666854 is about 478.6577867558.

Adding to 109666854 its reverse (458666901), we get a triangular number (568333755 = T₃₃₇₁₄).

The spelling of 109666854 in words is "one hundred nine million, six hundred sixty-six thousand, eight hundred fifty-four".