68891063 has 2 divisors, whose sum is σ = 68891064. Its totient is φ = 68891062.

The previous prime is 68891027. The next prime is 68891071. The reversal of 68891063 is 36019886.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68891063 - 2⁶ = 68890999 is a prime.

It is a super-2 number, since 2×68891063² = 9491957122539938, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68891063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68821063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34445531 + 34445532.

It is an arithmetic number, because the mean of its divisors is an integer number (34445532).

Almost surely, 2^68891063 is an apocalyptic number.

68891063 is a deficient number, since it is larger than the sum of its proper divisors (1).

68891063 is an equidigital number, since it uses as much as digits as its factorization.

68891063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 68891063 is about 8300.0640358976. The cubic root of 68891063 is about 409.9406279286.

The spelling of 68891063 in words is "sixty-eight million, eight hundred ninety-one thousand, sixty-three".