4638505 has 8 divisors (see below), whose sum is σ = 5716872. Its totient is φ = 3610368.

The previous prime is 4638461. The next prime is 4638509. The reversal of 4638505 is 5058364.

It can be written as a sum of positive squares in 4 ways, for example, as 1058841 + 3579664 = 1029^2 + 1892^2 .

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 4638505 - 2⁷ = 4638377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4638509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12352 + ... + 12721.

It is an arithmetic number, because the mean of its divisors is an integer number (714609).

Almost surely, 2^4638505 is an apocalyptic number.

It is an amenable number.

4638505 is a deficient number, since it is larger than the sum of its proper divisors (1078367).

4638505 is a wasteful number, since it uses less digits than its factorization.

4638505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25115.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 4638505 is about 2153.7188767339. The cubic root of 4638505 is about 166.7731031243.

The spelling of 4638505 in words is "four million, six hundred thirty-eight thousand, five hundred five".