4640555 has 4 divisors (see below), whose sum is σ = 5568672. Its totient is φ = 3712440.

The previous prime is 4640543. The next prime is 4640557. The reversal of 4640555 is 5550464.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4640555 - 2⁶ = 4640491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4640557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464051 + ... + 464060.

It is an arithmetic number, because the mean of its divisors is an integer number (1392168).

Almost surely, 2^4640555 is an apocalyptic number.

4640555 is a deficient number, since it is larger than the sum of its proper divisors (928117).

4640555 is an equidigital number, since it uses as much as digits as its factorization.

4640555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928116.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 4640555 is about 2154.1947451426. The cubic root of 4640555 is about 166.7976681159.

Subtracting 4640555 from its reverse (5550464), we obtain a palindrome (909909).

The spelling of 4640555 in words is "four million, six hundred forty thousand, five hundred fifty-five".