860812457 has 2 divisors, whose sum is σ = 860812458. Its totient is φ = 860812456.

The previous prime is 860812453. The next prime is 860812483. The reversal of 860812457 is 754218068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796876441 + 63936016 = 28229^2 + 7996^2 .

It is a cyclic number.

It is not a de Polignac number, because 860812457 - 2² = 860812453 is a prime.

It is a super-2 number, since 2×860812457² = 1481996172252753698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (860812451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430406228 + 430406229.

It is an arithmetic number, because the mean of its divisors is an integer number (430406229).

Almost surely, 2^860812457 is an apocalyptic number.

It is an amenable number.

860812457 is a deficient number, since it is larger than the sum of its proper divisors (1).

860812457 is an equidigital number, since it uses as much as digits as its factorization.

860812457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 860812457 is about 29339.6056040295. The cubic root of 860812457 is about 951.2679125744.

The spelling of 860812457 in words is "eight hundred sixty million, eight hundred twelve thousand, four hundred fifty-seven".