4661213605 has 4 divisors (see below), whose sum is σ = 5593456332. Its totient is φ = 3728970880.

The previous prime is 4661213591. The next prime is 4661213611. The reversal of 4661213605 is 5063121664.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1471336164 + 3189877441 = 38358^2 + 56479^2 .

It is not a de Polignac number, because 4661213605 - 2²¹ = 4659116453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466121356 + ... + 466121365.

It is an arithmetic number, because the mean of its divisors is an integer number (1398364083).

Almost surely, 2^4661213605 is an apocalyptic number.

It is an amenable number.

4661213605 is a deficient number, since it is larger than the sum of its proper divisors (932242727).

4661213605 is an equidigital number, since it uses as much as digits as its factorization.

4661213605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932242726.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 4661213605 is about 68273.0811154733. The cubic root of 4661213605 is about 1670.4481574188.

The spelling of 4661213605 in words is "four billion, six hundred sixty-one million, two hundred thirteen thousand, six hundred five".