111161667 has 4 divisors (see below), whose sum is σ = 148215560. Its totient is φ = 74107776.

The previous prime is 111161641. The next prime is 111161671. The reversal of 111161667 is 766161111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111161667 - 2⁷ = 111161539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111161467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18526942 + ... + 18526947.

It is an arithmetic number, because the mean of its divisors is an integer number (37053890).

Almost surely, 2^111161667 is an apocalyptic number.

111161667 is a deficient number, since it is larger than the sum of its proper divisors (37053893).

111161667 is an equidigital number, since it uses as much as digits as its factorization.

111161667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37053892.

The product of its digits is 1512, while the sum is 30.

The square root of 111161667 is about 10543.3233375440. The cubic root of 111161667 is about 480.8227599222.

The spelling of 111161667 in words is "one hundred eleven million, one hundred sixty-one thousand, six hundred sixty-seven".