2857767397 has 2 divisors, whose sum is σ = 2857767398. Its totient is φ = 2857767396.

The previous prime is 2857767391. The next prime is 2857767413. The reversal of 2857767397 is 7937677582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2270141316 + 587626081 = 47646^2 + 24241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2857767397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2857767391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428883698 + 1428883699.

It is an arithmetic number, because the mean of its divisors is an integer number (1428883699).

Almost surely, 2^2857767397 is an apocalyptic number.

It is an amenable number.

2857767397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857767397 is an equidigital number, since it uses as much as digits as its factorization.

2857767397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31116960, while the sum is 61.

The square root of 2857767397 is about 53458.0900986932. The cubic root of 2857767397 is about 1419.0867958026.

The spelling of 2857767397 in words is "two billion, eight hundred fifty-seven million, seven hundred sixty-seven thousand, three hundred ninety-seven".