2061665575 has 12 divisors (see below), whose sum is σ = 2610859680. Its totient is φ = 1614239360.

The previous prime is 2061665569. The next prime is 2061665579. The reversal of 2061665575 is 5755661602.

2061665575 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2061665575 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061665579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 876130 + ... + 878479.

It is an arithmetic number, because the mean of its divisors is an integer number (217571640).

Almost surely, 2^2061665575 is an apocalyptic number.

2061665575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2061665575 is a deficient number, since it is larger than the sum of its proper divisors (549194105).

2061665575 is a wasteful number, since it uses less digits than its factorization.

2061665575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754666 (or 1754661 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 43.

The square root of 2061665575 is about 45405.5676652104. The cubic root of 2061665575 is about 1272.7391588755.

The spelling of 2061665575 in words is "two billion, sixty-one million, six hundred sixty-five thousand, five hundred seventy-five".