4640445 has 24 divisors (see below), whose sum is σ = 8131032. Its totient is φ = 2448000.

The previous prime is 4640443. The next prime is 4640477. The reversal of 4640445 is 5440464.

It can be written as a sum of positive squares in 4 ways, for example, as 1726596 + 2913849 = 1314^2 + 1707^2 .

It is not a de Polignac number, because 4640445 - 2¹ = 4640443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4640443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4035 + ... + 5055.

It is an arithmetic number, because the mean of its divisors is an integer number (338793).

Almost surely, 2^4640445 is an apocalyptic number.

4640445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4640445 is a deficient number, since it is larger than the sum of its proper divisors (3490587).

4640445 is a wasteful number, since it uses less digits than its factorization.

4640445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 4640445 is about 2154.1692134092. The cubic root of 4640445 is about 166.7963501781.

The spelling of 4640445 in words is "four million, six hundred forty thousand, four hundred forty-five".