68866487 has 2 divisors, whose sum is σ = 68866488. Its totient is φ = 68866486.

The previous prime is 68866477. The next prime is 68866489. The reversal of 68866487 is 78466886.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68866487 - 2⁶ = 68866423 is a prime.

Together with 68866489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68866489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34433243 + 34433244.

It is an arithmetic number, because the mean of its divisors is an integer number (34433244).

Almost surely, 2^68866487 is an apocalyptic number.

68866487 is a deficient number, since it is larger than the sum of its proper divisors (1).

68866487 is an equidigital number, since it uses as much as digits as its factorization.

68866487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 53.

The square root of 68866487 is about 8298.5834333337. The cubic root of 68866487 is about 409.8918751167.

The spelling of 68866487 in words is "sixty-eight million, eight hundred sixty-six thousand, four hundred eighty-seven".