2770774021 has 2 divisors, whose sum is σ = 2770774022. Its totient is φ = 2770774020.

The previous prime is 2770774007. The next prime is 2770774037. The reversal of 2770774021 is 1204770772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2728913121 + 41860900 = 52239^2 + 6470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2770774021 - 2²³ = 2762385413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2770774001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385387010 + 1385387011.

It is an arithmetic number, because the mean of its divisors is an integer number (1385387011).

Almost surely, 2^2770774021 is an apocalyptic number.

It is an amenable number.

2770774021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2770774021 is an equidigital number, since it uses as much as digits as its factorization.

2770774021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38416, while the sum is 37.

The square root of 2770774021 is about 52638.1422639515. The cubic root of 2770774021 is about 1404.5386750521.

The spelling of 2770774021 in words is "two billion, seven hundred seventy million, seven hundred seventy-four thousand, twenty-one".