4564672661 has 2 divisors, whose sum is σ = 4564672662. Its totient is φ = 4564672660.

The previous prime is 4564672631. The next prime is 4564672687. The reversal of 4564672661 is 1662764654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4330429636 + 234243025 = 65806^2 + 15305^2 .

It is a cyclic number.

It is not a de Polignac number, because 4564672661 - 2¹⁴ = 4564656277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4564672631) 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 as a sum of consecutive naturals, namely, 2282336330 + 2282336331.

It is an arithmetic number, because the mean of its divisors is an integer number (2282336331).

Almost surely, 2^4564672661 is an apocalyptic number.

It is an amenable number.

4564672661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4564672661 is an equidigital number, since it uses as much as digits as its factorization.

4564672661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 47.

The square root of 4564672661 is about 67562.3612746032. The cubic root of 4564672661 is about 1658.8350878962.

The spelling of 4564672661 in words is "four billion, five hundred sixty-four million, six hundred seventy-two thousand, six hundred sixty-one".