5700065661 has 10 divisors (see below), whose sum is σ = 8514913022. Its totient is φ = 3800043720.

The previous prime is 5700065653. The next prime is 5700065663. The reversal of 5700065661 is 1665600075.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5011790436 + 688275225 = 70794^2 + 26235^2 .

It is not a de Polignac number, because 5700065661 - 2³ = 5700065653 is a prime.

It is a super-2 number, since 2×5700065661² = 64981497079422733842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5700065663) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 35185510 + ... + 35185671.

Almost surely, 2^5700065661 is an apocalyptic number.

It is an amenable number.

5700065661 is a deficient number, since it is larger than the sum of its proper divisors (2814847361).

5700065661 is an equidigital number, since it uses as much as digits as its factorization.

5700065661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70371193 (or 70371184 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 5700065661 is about 75498.7792020507. The cubic root of 5700065661 is about 1786.3228468217.

The spelling of 5700065661 in words is "five billion, seven hundred million, sixty-five thousand, six hundred sixty-one".