2420646663 has 8 divisors (see below), whose sum is σ = 3268384000. Its totient is φ = 1593336888.

The previous prime is 2420646647. The next prime is 2420646667. The reversal of 2420646663 is 3666460242.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2420646663 - 2⁴ = 2420646647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2420646667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5106613 + ... + 5107086.

It is an arithmetic number, because the mean of its divisors is an integer number (408548000).

Almost surely, 2^2420646663 is an apocalyptic number.

2420646663 is a deficient number, since it is larger than the sum of its proper divisors (847737337).

2420646663 is a wasteful number, since it uses less digits than its factorization.

2420646663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10213781.

The product of its (nonzero) digits is 248832, while the sum is 39.

The square root of 2420646663 is about 49200.0677133680. The cubic root of 2420646663 is about 1342.6942641316.

The spelling of 2420646663 in words is "two billion, four hundred twenty million, six hundred forty-six thousand, six hundred sixty-three".