2070406561 has 4 divisors (see below), whose sum is σ = 2120904324. Its totient is φ = 2019908800.

The previous prime is 2070406549. The next prime is 2070406577. The reversal of 2070406561 is 1656040702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1656040702 = 2 ⋅828020351.

It can be written as a sum of positive squares in 2 ways, for example, as 1030731025 + 1039675536 = 32105^2 + 32244^2 .

It is a cyclic number.

It is not a de Polignac number, because 2070406561 - 2¹¹ = 2070404513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2070406501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25248820 + ... + 25248901.

It is an arithmetic number, because the mean of its divisors is an integer number (530226081).

Almost surely, 2^2070406561 is an apocalyptic number.

It is an amenable number.

2070406561 is a deficient number, since it is larger than the sum of its proper divisors (50497763).

2070406561 is an equidigital number, since it uses as much as digits as its factorization.

2070406561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50497762.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2070406561 is about 45501.7204180238. The cubic root of 2070406561 is about 1274.5353295320.

The spelling of 2070406561 in words is "two billion, seventy million, four hundred six thousand, five hundred sixty-one".