68012957 has 2 divisors, whose sum is σ = 68012958. Its totient is φ = 68012956.

The previous prime is 68012929. The next prime is 68012969. The reversal of 68012957 is 75921086.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40018276 + 27994681 = 6326^2 + 5291^2 .

It is a cyclic number.

It is not a de Polignac number, because 68012957 - 2²⁴ = 51235741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68012957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68012927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34006478 + 34006479.

It is an arithmetic number, because the mean of its divisors is an integer number (34006479).

Almost surely, 2^68012957 is an apocalyptic number.

It is an amenable number.

68012957 is a deficient number, since it is larger than the sum of its proper divisors (1).

68012957 is an equidigital number, since it uses as much as digits as its factorization.

68012957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 68012957 is about 8246.9968473378. The cubic root of 68012957 is about 408.1914330577.

The spelling of 68012957 in words is "sixty-eight million, twelve thousand, nine hundred fifty-seven".