2620466663 has 4 divisors (see below), whose sum is σ = 2623441968. Its totient is φ = 2617491360.

The previous prime is 2620466627. The next prime is 2620466669. The reversal of 2620466663 is 3666640262.

2620466663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2620466663 - 2⁶ = 2620466599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2620466663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620466669) 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, 1486331 + ... + 1488092.

It is an arithmetic number, because the mean of its divisors is an integer number (655860492).

Almost surely, 2^2620466663 is an apocalyptic number.

2620466663 is a deficient number, since it is larger than the sum of its proper divisors (2975305).

2620466663 is an equidigital number, since it uses as much as digits as its factorization.

2620466663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975304.

The product of its (nonzero) digits is 373248, while the sum is 41.

The square root of 2620466663 is about 51190.4938733746. The cubic root of 2620466663 is about 1378.6675269306.

The spelling of 2620466663 in words is "two billion, six hundred twenty million, four hundred sixty-six thousand, six hundred sixty-three".