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113669 = 197577

113669 has 4 divisors (see below), whose sum is σ = 114444. Its totient is φ = 112896.

The previous prime is 113657. The next prime is 113683. The reversal of 113669 is 966311.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 966311 = 3672633.

It can be written as a sum of positive squares in 2 ways, for example, as 112225 + 1444 = 335^2 + 38^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-113669 is a prime.

It is a super-2 number, since 2×1136692 = 25841283122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92 + ... + 485.

It is an arithmetic number, because the mean of its divisors is an integer number (28611).

2113669 is an apocalyptic number.

It is an amenable number.

113669 is a deficient number, since it is larger than the sum of its proper divisors (775).

113669 is an equidigital number, since it uses as much as digits as its factorization.

113669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774.

The product of its digits is 972, while the sum is 26.

The square root of 113669 is about 337.1483353066. The cubic root of 113669 is about 48.4411018480.

The spelling of 113669 in words is "one hundred thirteen thousand, six hundred sixty-nine".

Divisors: 1 197 577 113669