4318645 has 4 divisors (see below), whose sum is σ = 5182380. Its totient is φ = 3454912.

The previous prime is 4318637. The next prime is 4318649. The reversal of 4318645 is 5468134.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1270129 + 3048516 = 1127^2 + 1746^2 .

It is a cyclic number.

It is not a de Polignac number, because 4318645 - 2³ = 4318637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4318649) 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, 431860 + ... + 431869.

It is an arithmetic number, because the mean of its divisors is an integer number (1295595).

Almost surely, 2^4318645 is an apocalyptic number.

It is an amenable number.

4318645 is a deficient number, since it is larger than the sum of its proper divisors (863735).

4318645 is an equidigital number, since it uses as much as digits as its factorization.

4318645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863734.

The product of its digits is 11520, while the sum is 31.

The square root of 4318645 is about 2078.1349811790. The cubic root of 4318645 is about 162.8480272712.

The spelling of 4318645 in words is "four million, three hundred eighteen thousand, six hundred forty-five".