68869487 has 2 divisors, whose sum is σ = 68869488. Its totient is φ = 68869486.

The previous prime is 68869481. The next prime is 68869511. The reversal of 68869487 is 78496886.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68869487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68869481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34434743 + 34434744.

It is an arithmetic number, because the mean of its divisors is an integer number (34434744).

Almost surely, 2^68869487 is an apocalyptic number.

68869487 is a deficient number, since it is larger than the sum of its proper divisors (1).

68869487 is an equidigital number, since it uses as much as digits as its factorization.

68869487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 56.

The square root of 68869487 is about 8298.7641851061. The cubic root of 68869487 is about 409.8978270091.

The spelling of 68869487 in words is "sixty-eight million, eight hundred sixty-nine thousand, four hundred eighty-seven".