68735215 has 8 divisors (see below), whose sum is σ = 85143168. Its totient is φ = 53214240.

The previous prime is 68735209. The next prime is 68735221. The reversal of 68735215 is 51253786.

It is an interprime number because it is at equal distance from previous prime (68735209) and next prime (68735221).

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

It is not a de Polignac number, because 68735215 - 2³ = 68735207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221572 + ... + 221881.

It is an arithmetic number, because the mean of its divisors is an integer number (10642896).

Almost surely, 2^68735215 is an apocalyptic number.

68735215 is a deficient number, since it is larger than the sum of its proper divisors (16407953).

68735215 is a wasteful number, since it uses less digits than its factorization.

68735215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443489.

The product of its digits is 50400, while the sum is 37.

The square root of 68735215 is about 8290.6703589034. The cubic root of 68735215 is about 409.6312667344.

The spelling of 68735215 in words is "sixty-eight million, seven hundred thirty-five thousand, two hundred fifteen".