2623643520 has 64 divisors (see below), whose sum is σ = 8362869840. Its totient is φ = 699637760.

The previous prime is 2623643509. The next prime is 2623643521. The reversal of 2623643520 is 253463262.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2623643521) 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, 681321 + ... + 685160.

Almost surely, 2^2623643520 is an apocalyptic number.

2623643520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2623643520 is an abundant number, since it is smaller than the sum of its proper divisors (5739226320).

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

2623643520 is a wasteful number, since it uses less digits than its factorization.

2623643520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366503 (or 1366491 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 2623643520 is about 51221.5142298624. The cubic root of 2623643520 is about 1379.2244329340.

The spelling of 2623643520 in words is "two billion, six hundred twenty-three million, six hundred forty-three thousand, five hundred twenty".