2663416640 has 28 divisors (see below), whose sum is σ = 6342261636. Its totient is φ = 1065366528.

The previous prime is 2663416627. The next prime is 2663416649. The reversal of 2663416640 is 466143662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 950118976 + 1713297664 = 30824^2 + 41392^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2663416594 and 2663416603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663416649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4161269 + ... + 4161908.

Almost surely, 2^2663416640 is an apocalyptic number.

2663416640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2663416640 is an abundant number, since it is smaller than the sum of its proper divisors (3678844996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2663416640 is an equidigital number, since it uses as much as digits as its factorization.

2663416640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323194 (or 8323184 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 2663416640 is about 51608.3001076377. The cubic root of 2663416640 is about 1386.1589590212.

The spelling of 2663416640 in words is "two billion, six hundred sixty-three million, four hundred sixteen thousand, six hundred forty".