4639745 has 12 divisors (see below), whose sum is σ = 6120660. Its totient is φ = 3373920.

The previous prime is 4639741. The next prime is 4639751. The reversal of 4639745 is 5479364.

It can be written as a sum of positive squares in 2 ways, for example, as 3254416 + 1385329 = 1804^2 + 1177^2 .

It is not a de Polignac number, because 4639745 - 2² = 4639741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4639699 and 4639708.

It is not an unprimeable number, because it can be changed into a prime (4639741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3230 + ... + 4439.

It is an arithmetic number, because the mean of its divisors is an integer number (510055).

Almost surely, 2^4639745 is an apocalyptic number.

It is an amenable number.

4639745 is a deficient number, since it is larger than the sum of its proper divisors (1480915).

4639745 is a wasteful number, since it uses less digits than its factorization.

4639745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7696 (or 7685 counting only the distinct ones).

The product of its digits is 90720, while the sum is 38.

The square root of 4639745 is about 2154.0067316515. The cubic root of 4639745 is about 166.7879628132.

The spelling of 4639745 in words is "four million, six hundred thirty-nine thousand, seven hundred forty-five".