2770660820 has 24 divisors (see below), whose sum is σ = 5827217928. Its totient is φ = 1106582400.

The previous prime is 2770660801. The next prime is 2770660847. The reversal of 2770660820 is 280660772.

2770660820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 140612164 + 2630048656 = 11858^2 + 51284^2 .

It is a super-2 number, since 2×2770660820² = 15353122758966144800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91571 + ... + 118010.

It is an arithmetic number, because the mean of its divisors is an integer number (242800747).

Almost surely, 2^2770660820 is an apocalyptic number.

2770660820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2770660820 is an abundant number, since it is smaller than the sum of its proper divisors (3056557108).

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

2770660820 is a wasteful number, since it uses less digits than its factorization.

2770660820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210251 (or 210249 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 2770660820 is about 52637.0669775587. The cubic root of 2770660820 is about 1404.5195471421.

The spelling of 2770660820 in words is "two billion, seven hundred seventy million, six hundred sixty thousand, eight hundred twenty".