2663320520 has 48 divisors (see below), whose sum is σ = 6970838940. Its totient is φ = 913137792.

The previous prime is 2663320511. The next prime is 2663320523. The reversal of 2663320520 is 250233662.

It can be written as a sum of positive squares in 2 ways, for example, as 2293835236 + 369485284 = 47894^2 + 19222^2 .

It is not an unprimeable number, because it can be changed into a prime (2663320523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 677459 + ... + 681378.

Almost surely, 2^2663320520 is an apocalyptic number.

2663320520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2663320520 is an abundant number, since it is smaller than the sum of its proper divisors (4307518420).

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

2663320520 is a wasteful number, since it uses less digits than its factorization.

2663320520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358862 (or 1358851 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 2663320520 is about 51607.3688536821. The cubic root of 2663320520 is about 1386.1422837979.

The spelling of 2663320520 in words is "two billion, six hundred sixty-three million, three hundred twenty thousand, five hundred twenty".