2620340553 has 4 divisors (see below), whose sum is σ = 3493787408. Its totient is φ = 1746893700.

The previous prime is 2620340551. The next prime is 2620340561. The reversal of 2620340553 is 3550430262.

2620340553 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2620340553 - 2¹ = 2620340551 is a prime.

It is a super-2 number, since 2×2620340553² = 13732369227392691618, which contains 22 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 2620340553.

It is not an unprimeable number, because it can be changed into a prime (2620340551) 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, 436723423 + ... + 436723428.

It is an arithmetic number, because the mean of its divisors is an integer number (873446852).

Almost surely, 2^2620340553 is an apocalyptic number.

It is an amenable number.

2620340553 is a deficient number, since it is larger than the sum of its proper divisors (873446855).

2620340553 is an equidigital number, since it uses as much as digits as its factorization.

2620340553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873446854.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 2620340553 is about 51189.2620868869. The cubic root of 2620340553 is about 1378.6454104436.

The spelling of 2620340553 in words is "two billion, six hundred twenty million, three hundred forty thousand, five hundred fifty-three".