4637945 has 8 divisors (see below), whose sum is σ = 5993736. Its totient is φ = 3424896.

The previous prime is 4637939. The next prime is 4637947. The reversal of 4637945 is 5497364.

It can be written as a sum of positive squares in 4 ways, for example, as 1024144 + 3613801 = 1012^2 + 1901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4637945 - 2⁴ = 4637929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4637899 and 4637908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4637947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35612 + ... + 35741.

It is an arithmetic number, because the mean of its divisors is an integer number (749217).

Almost surely, 2^4637945 is an apocalyptic number.

It is an amenable number.

4637945 is a deficient number, since it is larger than the sum of its proper divisors (1355791).

4637945 is a wasteful number, since it uses less digits than its factorization.

4637945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71371.

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

The square root of 4637945 is about 2153.5888651272. The cubic root of 4637945 is about 166.7663914290.

The spelling of 4637945 in words is "four million, six hundred thirty-seven thousand, nine hundred forty-five".