109678 has 16 divisors (see below), whose sum is σ = 178560. Its totient is φ = 50400.

The previous prime is 109673. The next prime is 109717. The reversal of 109678 is 876901.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1768 + ... + 1828.

It is an arithmetic number, because the mean of its divisors is an integer number (11160).

2¹⁰⁹⁶⁷⁸ is an apocalyptic number.

109678 is a deficient number, since it is larger than the sum of its proper divisors (68882).

109678 is a wasteful number, since it uses less digits than its factorization.

109678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 109678 is about 331.1766900010. The cubic root of 109678 is about 47.8674002348.

It can be divided in two parts, 109 and 678, that added together give a palindrome (787).

The spelling of 109678 in words is "one hundred nine thousand, six hundred seventy-eight".