117561860 has 24 divisors (see below), whose sum is σ = 265871256. Its totient is φ = 43407360.

The previous prime is 117561803. The next prime is 117561869. The reversal of 117561860 is 68165711.

It can be written as a sum of positive squares in 4 ways, for example, as 4734976 + 112826884 = 2176^2 + 10622^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 117561860.

It is not an unprimeable number, because it can be changed into a prime (117561869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225821 + ... + 226340.

It is an arithmetic number, because the mean of its divisors is an integer number (11077969).

Almost surely, 2^117561860 is an apocalyptic number.

117561860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117561860 is an abundant number, since it is smaller than the sum of its proper divisors (148309396).

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

117561860 is a wasteful number, since it uses less digits than its factorization.

117561860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452183 (or 452181 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 117561860 is about 10842.5947079101. The cubic root of 117561860 is about 489.8789927487.

The spelling of 117561860 in words is "one hundred seventeen million, five hundred sixty-one thousand, eight hundred sixty".