68521267 has 2 divisors, whose sum is σ = 68521268. Its totient is φ = 68521266.

The previous prime is 68521259. The next prime is 68521307. The reversal of 68521267 is 76212586.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68521267 - 2³ = 68521259 is a prime.

It is not a weakly prime, because it can be changed into another prime (68521207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34260633 + 34260634.

It is an arithmetic number, because the mean of its divisors is an integer number (34260634).

Almost surely, 2^68521267 is an apocalyptic number.

68521267 is a deficient number, since it is larger than the sum of its proper divisors (1).

68521267 is an equidigital number, since it uses as much as digits as its factorization.

68521267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 68521267 is about 8277.7573653738. The cubic root of 68521267 is about 409.2058134050.

It can be divided in two parts, 685 and 21267, that added together give a cube (21952 = 28³).

The spelling of 68521267 in words is "sixty-eight million, five hundred twenty-one thousand, two hundred sixty-seven".