2620884643 has 32 divisors (see below), whose sum is σ = 3025693440. Its totient is φ = 2250218880.

The previous prime is 2620884589. The next prime is 2620884647. The reversal of 2620884643 is 3464880262.

2620884643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2620884643 - 2²⁵ = 2587330211 is a prime.

It is a super-4 number, since 4×2620884643⁴ (a number of 39 digits) contains 4444 as substring.

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 2620884643.

It is not an unprimeable number, because it can be changed into a prime (2620884647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3461821 + ... + 3462577.

It is an arithmetic number, because the mean of its divisors is an integer number (94552920).

Almost surely, 2^2620884643 is an apocalyptic number.

2620884643 is a deficient number, since it is larger than the sum of its proper divisors (404808797).

2620884643 is a wasteful number, since it uses less digits than its factorization.

2620884643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027.

The product of its (nonzero) digits is 442368, while the sum is 43.

The square root of 2620884643 is about 51194.5763045266. The cubic root of 2620884643 is about 1378.7408249205.

The spelling of 2620884643 in words is "two billion, six hundred twenty million, eight hundred eighty-four thousand, six hundred forty-three".