2620865473 has 4 divisors (see below), whose sum is σ = 2620972080. Its totient is φ = 2620758868.

The previous prime is 2620865461. The next prime is 2620865483. The reversal of 2620865473 is 3745680262.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2620865473 - 2¹⁷ = 2620734401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2620865483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4386 + ... + 72532.

It is an arithmetic number, because the mean of its divisors is an integer number (655243020).

Almost surely, 2^2620865473 is an apocalyptic number.

It is an amenable number.

2620865473 is a deficient number, since it is larger than the sum of its proper divisors (106607).

2620865473 is an equidigital number, since it uses as much as digits as its factorization.

2620865473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106606.

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 2620865473 is about 51194.3890773198. The cubic root of 2620865473 is about 1378.7374633932.

The spelling of 2620865473 in words is "two billion, six hundred twenty million, eight hundred sixty-five thousand, four hundred seventy-three".