3564570661 has 2 divisors, whose sum is σ = 3564570662. Its totient is φ = 3564570660.

The previous prime is 3564570643. The next prime is 3564570671. The reversal of 3564570661 is 1660754653.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3354610561 + 209960100 = 57919^2 + 14490^2 .

It is a cyclic number.

It is not a de Polignac number, because 3564570661 - 2⁵ = 3564570629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3564570671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1782285330 + 1782285331.

It is an arithmetic number, because the mean of its divisors is an integer number (1782285331).

Almost surely, 2^3564570661 is an apocalyptic number.

It is an amenable number.

3564570661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3564570661 is an equidigital number, since it uses as much as digits as its factorization.

3564570661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 43.

The square root of 3564570661 is about 59704.0255007985. The cubic root of 3564570661 is about 1527.5745329863.

The spelling of 3564570661 in words is "three billion, five hundred sixty-four million, five hundred seventy thousand, six hundred sixty-one".