2057645767 has 2 divisors, whose sum is σ = 2057645768. Its totient is φ = 2057645766.

The previous prime is 2057645701. The next prime is 2057645791. The reversal of 2057645767 is 7675467502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2057645767 - 2¹¹ = 2057643719 is a prime.

It is a super-2 number, since 2×2057645767² = 8467812204906036578, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2057645767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2057645267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028822883 + 1028822884.

It is an arithmetic number, because the mean of its divisors is an integer number (1028822884).

Almost surely, 2^2057645767 is an apocalyptic number.

2057645767 is a deficient number, since it is larger than the sum of its proper divisors (1).

2057645767 is an equidigital number, since it uses as much as digits as its factorization.

2057645767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2469600, while the sum is 49.

The square root of 2057645767 is about 45361.2804823673. The cubic root of 2057645767 is about 1271.9114307406.

The spelling of 2057645767 in words is "two billion, fifty-seven million, six hundred forty-five thousand, seven hundred sixty-seven".