111670 has 16 divisors (see below), whose sum is σ = 216720. Its totient is φ = 41184.

The previous prime is 111667. The next prime is 111697. The reversal of 111670 is 76111.

111670 = 65² + 66² + ... + 84².

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, 300 + ... + 559.

It is an arithmetic number, because the mean of its divisors is an integer number (13545).

2¹¹¹⁶⁷⁰ is an apocalyptic number.

111670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111670 is a deficient number, since it is larger than the sum of its proper divisors (105050).

111670 is a wasteful number, since it uses less digits than its factorization.

111670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 111670 is about 334.1706151055. The cubic root of 111670 is about 48.1554566304.

Subtracting from 111670 its product of nonzero digits (42), we obtain a triangular number (111628 = T₄₇₂).

Adding to 111670 its reverse (76111), we get a palindrome (187781).

It can be divided in two parts, 11 and 1670, that added together give a square (1681 = 41²).

The spelling of 111670 in words is "one hundred eleven thousand, six hundred seventy".