2075975721 has 12 divisors (see below), whose sum is σ = 2999662848. Its totient is φ = 1383507864.

The previous prime is 2075975677. The next prime is 2075975731. The reversal of 2075975721 is 1275795702.

2075975721 is a `hidden beast` number, since 2 + 0 + 7 + 597 + 57 + 2 + 1 = 666.

It is not a de Polignac number, because 2075975721 - 2¹⁷ = 2075844649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2075975731) 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 11 ways as a sum of consecutive naturals, for example, 10945 + ... + 65358.

It is an arithmetic number, because the mean of its divisors is an integer number (249971904).

Almost surely, 2^2075975721 is an apocalyptic number.

It is an amenable number.

2075975721 is a deficient number, since it is larger than the sum of its proper divisors (923687127).

2075975721 is a wasteful number, since it uses less digits than its factorization.

2075975721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79332 (or 79329 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 45.

The square root of 2075975721 is about 45562.8765663451. The cubic root of 2075975721 is about 1275.6770918069.

The spelling of 2075975721 in words is "two billion, seventy-five million, nine hundred seventy-five thousand, seven hundred twenty-one".