7685052457 has 2 divisors, whose sum is σ = 7685052458. Its totient is φ = 7685052456.

The previous prime is 7685052451. The next prime is 7685052467. The reversal of 7685052457 is 7542505867.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4731238656 + 2953813801 = 68784^2 + 54349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7685052457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7685052457.

It is not a weakly prime, because it can be changed into another prime (7685052451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3842526228 + 3842526229.

It is an arithmetic number, because the mean of its divisors is an integer number (3842526229).

Almost surely, 2^7685052457 is an apocalyptic number.

It is an amenable number.

7685052457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7685052457 is an equidigital number, since it uses as much as digits as its factorization.

7685052457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352000, while the sum is 49.

The square root of 7685052457 is about 87664.4309683237. The cubic root of 7685052457 is about 1973.4022184575.

The spelling of 7685052457 in words is "seven billion, six hundred eighty-five million, fifty-two thousand, four hundred fifty-seven".