115065660 has 48 divisors (see below), whose sum is σ = 325213056. Its totient is φ = 30395712.

The previous prime is 115065659. The next prime is 115065661. The reversal of 115065660 is 66560511.

It is an interprime number because it is at equal distance from previous prime (115065659) and next prime (115065661).

It is a super-2 number, since 2×115065660² = 26480212222471200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115065661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2542 + ... + 15381.

It is an arithmetic number, because the mean of its divisors is an integer number (6775272).

Almost surely, 2^115065660 is an apocalyptic number.

115065660 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 115065660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162606528).

115065660 is an abundant number, since it is smaller than the sum of its proper divisors (210147396).

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

115065660 is a wasteful number, since it uses less digits than its factorization.

115065660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18042 (or 18040 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 115065660 is about 10726.8662711903. The cubic root of 115065660 is about 486.3869464897.

The spelling of 115065660 in words is "one hundred fifteen million, sixty-five thousand, six hundred sixty".