2065616920 has 64 divisors (see below), whose sum is σ = 4898296800. Its totient is φ = 781793280.

The previous prime is 2065616897. The next prime is 2065616923. The reversal of 2065616920 is 296165602.

It is a self number, because there is not a number n which added to its sum of digits gives 2065616920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065616923) 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, 1033362 + ... + 1035358.

Almost surely, 2^2065616920 is an apocalyptic number.

2065616920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2065616920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2449148400).

2065616920 is an abundant number, since it is smaller than the sum of its proper divisors (2832679880).

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

2065616920 is a wasteful number, since it uses less digits than its factorization.

2065616920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388 (or 3384 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 2065616920 is about 45449.0585161013. The cubic root of 2065616920 is about 1273.5517416959.

The spelling of 2065616920 in words is "two billion, sixty-five million, six hundred sixteen thousand, nine hundred twenty".