111640355 has 8 divisors (see below), whose sum is σ = 134044512. Its totient is φ = 89261568.

The previous prime is 111640337. The next prime is 111640363. The reversal of 111640355 is 553046111.

It is a Cunningham number, because it is equal to 10566²-1.

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

It is a cyclic number.

It is not a de Polignac number, because 111640355 - 2¹⁶ = 111574819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5282 + ... + 15848.

It is an arithmetic number, because the mean of its divisors is an integer number (16755564).

Almost surely, 2^111640355 is an apocalyptic number.

111640355 is a deficient number, since it is larger than the sum of its proper divisors (22404157).

111640355 is a wasteful number, since it uses less digits than its factorization.

111640355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12685.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 111640355 is about 10565.9999526784. Note that the first 4 decimals coincide. The cubic root of 111640355 is about 481.5119498189.

Adding to 111640355 its reverse (553046111), we get a palindrome (664686466).

The spelling of 111640355 in words is "one hundred eleven million, six hundred forty thousand, three hundred fifty-five".