4640581577 has 2 divisors, whose sum is σ = 4640581578. Its totient is φ = 4640581576.

The previous prime is 4640581573. The next prime is 4640581619. The reversal of 4640581577 is 7751850464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4625496121 + 15085456 = 68011^2 + 3884^2 .

It is a cyclic number.

It is not a de Polignac number, because 4640581577 - 2² = 4640581573 is a prime.

It is not a weakly prime, because it can be changed into another prime (4640581573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2320290788 + 2320290789.

It is an arithmetic number, because the mean of its divisors is an integer number (2320290789).

Almost surely, 2^4640581577 is an apocalyptic number.

It is an amenable number.

4640581577 is a deficient number, since it is larger than the sum of its proper divisors (1).

4640581577 is an equidigital number, since it uses as much as digits as its factorization.

4640581577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 4640581577 is about 68121.8142521175. The cubic root of 4640581577 is about 1667.9798653848.

The spelling of 4640581577 in words is "four billion, six hundred forty million, five hundred eighty-one thousand, five hundred seventy-seven".