113620645 has 4 divisors (see below), whose sum is σ = 136344780. Its totient is φ = 90896512.

The previous prime is 113620643. The next prime is 113620669. The reversal of 113620645 is 546026311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546026311 = 61 ⋅8951251.

It can be written as a sum of positive squares in 2 ways, for example, as 82283041 + 31337604 = 9071^2 + 5598^2 .

It is a cyclic number.

It is not a de Polignac number, because 113620645 - 2¹ = 113620643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113620643) 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, 11362060 + ... + 11362069.

It is an arithmetic number, because the mean of its divisors is an integer number (34086195).

Almost surely, 2^113620645 is an apocalyptic number.

It is an amenable number.

113620645 is a deficient number, since it is larger than the sum of its proper divisors (22724135).

113620645 is an equidigital number, since it uses as much as digits as its factorization.

113620645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22724134.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 113620645 is about 10659.2985228860. The cubic root of 113620645 is about 484.3423189605.

Adding to 113620645 its reverse (546026311), we get a palindrome (659646956).

The spelling of 113620645 in words is "one hundred thirteen million, six hundred twenty thousand, six hundred forty-five".