2470645621 has 4 divisors (see below), whose sum is σ = 2474676652. Its totient is φ = 2466614592.

The previous prime is 2470645549. The next prime is 2470645637. The reversal of 2470645621 is 1265460742.

2470645621 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 can be written as a sum of positive squares in 2 ways, for example, as 234396100 + 2236249521 = 15310^2 + 47289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2470645621 - 2⁷ = 2470645493 is a prime.

It is a super-2 number, since 2×2470645621² = 12208179569132951282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2470645421) 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, 2014596 + ... + 2015821.

It is an arithmetic number, because the mean of its divisors is an integer number (618669163).

Almost surely, 2^2470645621 is an apocalyptic number.

It is an amenable number.

2470645621 is a deficient number, since it is larger than the sum of its proper divisors (4031031).

2470645621 is an equidigital number, since it uses as much as digits as its factorization.

2470645621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4031030.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 2470645621 is about 49705.5894341874. The cubic root of 2470645621 is about 1351.8758779662.

It can be divided in two parts, 2470 and 645621, that added together give a triangular number (648091 = T₁₁₃₈).

The spelling of 2470645621 in words is "two billion, four hundred seventy million, six hundred forty-five thousand, six hundred twenty-one".