5335645661 has 4 divisors (see below), whose sum is σ = 5423115324. Its totient is φ = 5248176000.

The previous prime is 5335645597. The next prime is 5335645681. The reversal of 5335645661 is 1665465335.

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 1706185636 + 3629460025 = 41306^2 + 60245^2 .

It is a cyclic number.

It is not a de Polignac number, because 5335645661 - 2⁶ = 5335645597 is a prime.

It is a super-2 number, since 2×5335645661² = 56938229239496253842, 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 (5335645681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43734740 + ... + 43734861.

It is an arithmetic number, because the mean of its divisors is an integer number (1355778831).

Almost surely, 2^5335645661 is an apocalyptic number.

It is an amenable number.

5335645661 is a deficient number, since it is larger than the sum of its proper divisors (87469663).

5335645661 is an equidigital number, since it uses as much as digits as its factorization.

5335645661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87469662.

The product of its digits is 972000, while the sum is 44.

The square root of 5335645661 is about 73045.5040437124. The cubic root of 5335645661 is about 1747.4133935246.

The spelling of 5335645661 in words is "five billion, three hundred thirty-five million, six hundred forty-five thousand, six hundred sixty-one".