2020680645 has 16 divisors (see below), whose sum is σ = 3242690880. Its totient is φ = 1074495744.

The previous prime is 2020680643. The next prime is 2020680659. The reversal of 2020680645 is 5460860202.

It is not a de Polignac number, because 2020680645 - 2¹ = 2020680643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020680643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194815 + ... + 204924.

It is an arithmetic number, because the mean of its divisors is an integer number (202668180).

Almost surely, 2^2020680645 is an apocalyptic number.

It is an amenable number.

2020680645 is a deficient number, since it is larger than the sum of its proper divisors (1222010235).

2020680645 is a wasteful number, since it uses less digits than its factorization.

2020680645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400084.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 2020680645 is about 44951.9815469797. The cubic root of 2020680645 is about 1264.2488304402.

The spelling of 2020680645 in words is "two billion, twenty million, six hundred eighty thousand, six hundred forty-five".