68889277 has 2 divisors, whose sum is σ = 68889278. Its totient is φ = 68889276.

The previous prime is 68889257. The next prime is 68889319. The reversal of 68889277 is 77298886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68873401 + 15876 = 8299^2 + 126^2 .

It is a cyclic number.

It is not a de Polignac number, because 68889277 - 2¹⁵ = 68856509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68889257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34444638 + 34444639.

It is an arithmetic number, because the mean of its divisors is an integer number (34444639).

Almost surely, 2^68889277 is an apocalyptic number.

It is an amenable number.

68889277 is a deficient number, since it is larger than the sum of its proper divisors (1).

68889277 is an equidigital number, since it uses as much as digits as its factorization.

68889277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2709504, while the sum is 55.

The square root of 68889277 is about 8299.9564456689. The cubic root of 68889277 is about 409.9370853294.

The spelling of 68889277 in words is "sixty-eight million, eight hundred eighty-nine thousand, two hundred seventy-seven".