2421710661 has 16 divisors (see below), whose sum is σ = 3269185920. Its totient is φ = 1594451520.

The previous prime is 2421710659. The next prime is 2421710663. The reversal of 2421710661 is 1660171242.

It is an interprime number because it is at equal distance from previous prime (2421710659) and next prime (2421710663).

It is not a de Polignac number, because 2421710661 - 2¹ = 2421710659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421710663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89791 + ... + 113603.

It is an arithmetic number, because the mean of its divisors is an integer number (204324120).

Almost surely, 2^2421710661 is an apocalyptic number.

It is an amenable number.

2421710661 is a deficient number, since it is larger than the sum of its proper divisors (847475259).

2421710661 is a wasteful number, since it uses less digits than its factorization.

2421710661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24236.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2421710661 is about 49210.8794983386. The cubic root of 2421710661 is about 1342.8909629128.

The spelling of 2421710661 in words is "two billion, four hundred twenty-one million, seven hundred ten thousand, six hundred sixty-one".