23445645 has 32 divisors (see below), whose sum is σ = 39070080. Its totient is φ = 11996160.

The previous prime is 23445593. The next prime is 23445647. The reversal of 23445645 is 54654432.

It is not a de Polignac number, because 23445645 - 2¹⁰ = 23444621 is a prime.

It is a super-3 number, since 3×23445645³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23445647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40921 + ... + 41489.

It is an arithmetic number, because the mean of its divisors is an integer number (1220940).

Almost surely, 2^23445645 is an apocalyptic number.

It is an amenable number.

23445645 is a deficient number, since it is larger than the sum of its proper divisors (15624435).

23445645 is a wasteful number, since it uses less digits than its factorization.

23445645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its digits is 57600, while the sum is 33.

The square root of 23445645 is about 4842.0703216703. The cubic root of 23445645 is about 286.2117077233.

It can be divided in two parts, 23445 and 645, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 23445645 in words is "twenty-three million, four hundred forty-five thousand, six hundred forty-five".