4638641 has 8 divisors (see below), whose sum is σ = 5580480. Its totient is φ = 3766608.

The previous prime is 4638631. The next prime is 4638659. The reversal of 4638641 is 1468364.

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 4638641 - 2¹⁴ = 4622257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4638598 and 4638607.

It is not an unprimeable number, because it can be changed into a prime (4638631) 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, 17306 + ... + 17571.

It is an arithmetic number, because the mean of its divisors is an integer number (697560).

Almost surely, 2^4638641 is an apocalyptic number.

It is an amenable number.

4638641 is a deficient number, since it is larger than the sum of its proper divisors (941839).

4638641 is a wasteful number, since it uses less digits than its factorization.

4638641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34903.

The product of its digits is 13824, while the sum is 32.

The square root of 4638641 is about 2153.7504497968. The cubic root of 4638641 is about 166.7747330259.

The spelling of 4638641 in words is "four million, six hundred thirty-eight thousand, six hundred forty-one".