2061644610 has 16 divisors (see below), whose sum is σ = 4947947136. Its totient is φ = 549771888.

The previous prime is 2061644579. The next prime is 2061644617. The reversal of 2061644610 is 164461602.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 68721487 = 2061644610 / (2 + 0 + 6 + 1 + 6 + 4 + 4 + 6 + 1 + 0).

It is not an unprimeable number, because it can be changed into a prime (2061644617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34360714 + ... + 34360773.

It is an arithmetic number, because the mean of its divisors is an integer number (309246696).

Almost surely, 2^2061644610 is an apocalyptic number.

2061644610 is an abundant number, since it is smaller than the sum of its proper divisors (2886302526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2061644610 is a wasteful number, since it uses less digits than its factorization.

2061644610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68721497.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 2061644610 is about 45405.3368008652. The cubic root of 2061644610 is about 1272.7348447153.

The spelling of 2061644610 in words is "two billion, sixty-one million, six hundred forty-four thousand, six hundred ten".