2024645661 has 12 divisors (see below), whose sum is σ = 3003528892. Its totient is φ = 1313283456.

The previous prime is 2024645639. The next prime is 2024645677. The reversal of 2024645661 is 1665464202.

2024645661 is a `hidden beast` number, since 2 + 0 + 2 + 4 + 645 + 6 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1647548100 + 377097561 = 40590^2 + 19419^2 .

It is not a de Polignac number, because 2024645661 - 2¹³ = 2024637469 is a prime.

It is a super-2 number, since 2×2024645661² = 8198380105212253842, 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 (2024645621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3039676 + ... + 3040341.

Almost surely, 2^2024645661 is an apocalyptic number.

It is an amenable number.

2024645661 is a deficient number, since it is larger than the sum of its proper divisors (978883231).

2024645661 is a wasteful number, since it uses less digits than its factorization.

2024645661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6080060 (or 6080057 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 2024645661 is about 44996.0627277543. The cubic root of 2024645661 is about 1265.0752007870.

The spelling of 2024645661 in words is "two billion, twenty-four million, six hundred forty-five thousand, six hundred sixty-one".