4456645 has 4 divisors (see below), whose sum is σ = 5347980. Its totient is φ = 3565312.

The previous prime is 4456643. The next prime is 4456651. The reversal of 4456645 is 5466544.

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 1640961 + 2815684 = 1281^2 + 1678^2 .

It is a cyclic number.

It is not a de Polignac number, because 4456645 - 2¹ = 4456643 is a prime.

4456645 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4456645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4456643) 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, 445660 + ... + 445669.

It is an arithmetic number, because the mean of its divisors is an integer number (1336995).

Almost surely, 2^4456645 is an apocalyptic number.

It is an amenable number.

4456645 is a deficient number, since it is larger than the sum of its proper divisors (891335).

4456645 is an equidigital number, since it uses as much as digits as its factorization.

4456645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891334.

The product of its digits is 57600, while the sum is 34.

The square root of 4456645 is about 2111.0767394863. The cubic root of 4456645 is about 164.5644466212.

The spelling of 4456645 in words is "four million, four hundred fifty-six thousand, six hundred forty-five".