2621566343 has 4 divisors (see below), whose sum is σ = 2859890568. Its totient is φ = 2383242120.

The previous prime is 2621566319. The next prime is 2621566361. The reversal of 2621566343 is 3436651262.

It is a happy number.

2621566343 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 2621566343 - 2¹⁸ = 2621304199 is a prime.

It is a super-2 number, since 2×2621566343² = 13745220181500787298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2621566297 and 2621566306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621566313) 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, 119162096 + ... + 119162117.

It is an arithmetic number, because the mean of its divisors is an integer number (714972642).

Almost surely, 2^2621566343 is an apocalyptic number.

2621566343 is a deficient number, since it is larger than the sum of its proper divisors (238324225).

2621566343 is a wasteful number, since it uses less digits than its factorization.

2621566343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238324224.

The product of its digits is 155520, while the sum is 38.

The square root of 2621566343 is about 51201.2338034934. The cubic root of 2621566343 is about 1378.8603527735.

The spelling of 2621566343 in words is "two billion, six hundred twenty-one million, five hundred sixty-six thousand, three hundred forty-three".