113651661 has 8 divisors (see below), whose sum is σ = 151606720. Its totient is φ = 75732192.

The previous prime is 113651653. The next prime is 113651719. The reversal of 113651661 is 166156311.

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

It is not a de Polignac number, because 113651661 - 2³ = 113651653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113651621) 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, 241 + ... + 15078.

It is an arithmetic number, because the mean of its divisors is an integer number (18950840).

Almost surely, 2^113651661 is an apocalyptic number.

It is an amenable number.

113651661 is a deficient number, since it is larger than the sum of its proper divisors (37955059).

113651661 is a wasteful number, since it uses less digits than its factorization.

113651661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17795.

The product of its digits is 3240, while the sum is 30.

The square root of 113651661 is about 10660.7533035898. The cubic root of 113651661 is about 484.3863866404.

The spelling of 113651661 in words is "one hundred thirteen million, six hundred fifty-one thousand, six hundred sixty-one".