68742587 has 2 divisors, whose sum is σ = 68742588. Its totient is φ = 68742586.

The previous prime is 68742539. The next prime is 68742601. The reversal of 68742587 is 78524786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68742587 - 2¹² = 68738491 is a prime.

It is not a weakly prime, because it can be changed into another prime (68742517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34371293 + 34371294.

It is an arithmetic number, because the mean of its divisors is an integer number (34371294).

Almost surely, 2^68742587 is an apocalyptic number.

68742587 is a deficient number, since it is larger than the sum of its proper divisors (1).

68742587 is an equidigital number, since it uses as much as digits as its factorization.

68742587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752640, while the sum is 47.

The square root of 68742587 is about 8291.1149431183. The cubic root of 68742587 is about 409.6459108230.

The spelling of 68742587 in words is "sixty-eight million, seven hundred forty-two thousand, five hundred eighty-seven".