68739187 has 8 divisors (see below), whose sum is σ = 75057840. Its totient is φ = 62432160.

The previous prime is 68739173. The next prime is 68739197. The reversal of 68739187 is 78193786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68739187 - 2¹¹ = 68737139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68739187.

It is not an unprimeable number, because it can be changed into a prime (68739127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13533 + ... + 17905.

It is an arithmetic number, because the mean of its divisors is an integer number (9382230).

Almost surely, 2^68739187 is an apocalyptic number.

68739187 is a deficient number, since it is larger than the sum of its proper divisors (6318653).

68739187 is a wasteful number, since it uses less digits than its factorization.

68739187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5813.

The product of its digits is 508032, while the sum is 49.

The square root of 68739187 is about 8290.9099018142. The cubic root of 68739187 is about 409.6391570327.

The spelling of 68739187 in words is "sixty-eight million, seven hundred thirty-nine thousand, one hundred eighty-seven".