68207187 has 8 divisors (see below), whose sum is σ = 91501504. Its totient is φ = 45192168.

The previous prime is 68207173. The next prime is 68207189. The reversal of 68207187 is 78170286.

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

It is not a de Polignac number, because 68207187 - 2⁷ = 68207059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68207189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69253 + ... + 70230.

It is an arithmetic number, because the mean of its divisors is an integer number (11437688).

Almost surely, 2^68207187 is an apocalyptic number.

68207187 is a deficient number, since it is larger than the sum of its proper divisors (23294317).

68207187 is a wasteful number, since it uses less digits than its factorization.

68207187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139649.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 68207187 is about 8258.7642538094. The cubic root of 68207187 is about 408.5796319805.

The spelling of 68207187 in words is "sixty-eight million, two hundred seven thousand, one hundred eighty-seven".