2487020661 has 24 divisors (see below), whose sum is σ = 3815982144. Its totient is φ = 1555436160.

The previous prime is 2487020639. The next prime is 2487020671. The reversal of 2487020661 is 1660207842.

It is not a de Polignac number, because 2487020661 - 2⁹ = 2487020149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2487020671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21450 + ... + 73716.

It is an arithmetic number, because the mean of its divisors is an integer number (158999256).

Almost surely, 2^2487020661 is an apocalyptic number.

It is an amenable number.

2487020661 is a deficient number, since it is larger than the sum of its proper divisors (1328961483).

2487020661 is a wasteful number, since it uses less digits than its factorization.

2487020661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52601 (or 52598 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 2487020661 is about 49870.0377080267. The cubic root of 2487020661 is about 1354.8559753965.

The spelling of 2487020661 in words is "two billion, four hundred eighty-seven million, twenty thousand, six hundred sixty-one".