4664455645 has 4 divisors (see below), whose sum is σ = 5597346780. Its totient is φ = 3731564512.

The previous prime is 4664455603. The next prime is 4664455661. The reversal of 4664455645 is 5465544664.

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 2009011684 + 2655443961 = 44822^2 + 51531^2 .

It is a cyclic number.

It is not a de Polignac number, because 4664455645 - 2²³ = 4656067037 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 466445560 + ... + 466445569.

It is an arithmetic number, because the mean of its divisors is an integer number (1399336695).

Almost surely, 2^4664455645 is an apocalyptic number.

It is an amenable number.

4664455645 is a deficient number, since it is larger than the sum of its proper divisors (932891135).

4664455645 is an equidigital number, since it uses as much as digits as its factorization.

4664455645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932891134.

The product of its digits is 6912000, while the sum is 49.

The square root of 4664455645 is about 68296.8201675598. The cubic root of 4664455645 is about 1670.8353530502.

The spelling of 4664455645 in words is "four billion, six hundred sixty-four million, four hundred fifty-five thousand, six hundred forty-five".