113661645 has 16 divisors (see below), whose sum is σ = 184162560. Its totient is φ = 59851584.

The previous prime is 113661641. The next prime is 113661649. The reversal of 113661645 is 546166311.

It is an interprime number because it is at equal distance from previous prime (113661641) and next prime (113661649).

It is not a de Polignac number, because 113661645 - 2² = 113661641 is a prime.

It is a super-3 number, since 3×113661645³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113661641) 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, 46774 + ... + 49143.

It is an arithmetic number, because the mean of its divisors is an integer number (11510160).

Almost surely, 2^113661645 is an apocalyptic number.

113661645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113661645 is a deficient number, since it is larger than the sum of its proper divisors (70500915).

113661645 is an equidigital number, since it uses as much as digits as its factorization.

113661645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96004.

The product of its digits is 12960, while the sum is 33.

The square root of 113661645 is about 10661.2215528991. The cubic root of 113661645 is about 484.4005702491.

The spelling of 113661645 in words is "one hundred thirteen million, six hundred sixty-one thousand, six hundred forty-five".