68536957 has 2 divisors, whose sum is σ = 68536958. Its totient is φ = 68536956.

The previous prime is 68536879. The next prime is 68536961. The reversal of 68536957 is 75963586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65512836 + 3024121 = 8094^2 + 1739^2 .

It is a cyclic number.

It is not a de Polignac number, because 68536957 - 2¹¹ = 68534909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68536957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68536997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34268478 + 34268479.

It is an arithmetic number, because the mean of its divisors is an integer number (34268479).

Almost surely, 2^68536957 is an apocalyptic number.

It is an amenable number.

68536957 is a deficient number, since it is larger than the sum of its proper divisors (1).

68536957 is an equidigital number, since it uses as much as digits as its factorization.

68536957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 49.

The square root of 68536957 is about 8278.7050315856. The cubic root of 68536957 is about 409.2370443376.

The spelling of 68536957 in words is "sixty-eight million, five hundred thirty-six thousand, nine hundred fifty-seven".