2065620777 has 64 divisors (see below), whose sum is σ = 3319971840. Its totient is φ = 1127649600.

The previous prime is 2065620763. The next prime is 2065620779. The reversal of 2065620777 is 7770265602.

It is not a de Polignac number, because 2065620777 - 2⁴ = 2065620761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2065620779) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3273252 + ... + 3273882.

It is an arithmetic number, because the mean of its divisors is an integer number (51874560).

Almost surely, 2^2065620777 is an apocalyptic number.

It is an amenable number.

2065620777 is a deficient number, since it is larger than the sum of its proper divisors (1254351063).

2065620777 is a wasteful number, since it uses less digits than its factorization.

2065620777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914.

The product of its (nonzero) digits is 246960, while the sum is 42.

The square root of 2065620777 is about 45449.1009482036. The cubic root of 2065620777 is about 1273.5525343705.

The spelling of 2065620777 in words is "two billion, sixty-five million, six hundred twenty thousand, seven hundred seventy-seven".