111987465 has 8 divisors (see below), whose sum is σ = 179179968. Its totient is φ = 59726640.

The previous prime is 111987439. The next prime is 111987479. The reversal of 111987465 is 564789111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111987465 - 2⁵ = 111987433 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3732901 + ... + 3732930.

It is an arithmetic number, because the mean of its divisors is an integer number (22397496).

Almost surely, 2^111987465 is an apocalyptic number.

111987465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111987465 is a deficient number, since it is larger than the sum of its proper divisors (67192503).

111987465 is an equidigital number, since it uses as much as digits as its factorization.

111987465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465839.

The product of its digits is 60480, while the sum is 42.

The square root of 111987465 is about 10582.4130046034. The cubic root of 111987465 is about 482.0104693467.

The spelling of 111987465 in words is "one hundred eleven million, nine hundred eighty-seven thousand, four hundred sixty-five".