111700640 has 48 divisors (see below), whose sum is σ = 265573728. Its totient is φ = 44395776.

The previous prime is 111700619. The next prime is 111700661. The reversal of 111700640 is 46007111.

It is an interprime number because it is at equal distance from previous prime (111700619) and next prime (111700661).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 23939 + ... + 28221.

It is an arithmetic number, because the mean of its divisors is an integer number (5532786).

Almost surely, 2^111700640 is an apocalyptic number.

111700640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111700640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132786864).

111700640 is an abundant number, since it is smaller than the sum of its proper divisors (153873088).

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

111700640 is a wasteful number, since it uses less digits than its factorization.

111700640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461 (or 4453 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 111700640 is about 10568.8523501845. The cubic root of 111700640 is about 481.5986052358.

Adding to 111700640 its reverse (46007111), we get a palindrome (157707751).

The spelling of 111700640 in words is "one hundred eleven million, seven hundred thousand, six hundred forty".