68013145 has 8 divisors (see below), whose sum is σ = 81781056. Its totient is φ = 54300336.

The previous prime is 68013133. The next prime is 68013157. The reversal of 68013145 is 54131086.

It is an interprime number because it is at equal distance from previous prime (68013133) and next prime (68013157).

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 68013145 - 2²⁵ = 34458713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11007 + ... + 16036.

It is an arithmetic number, because the mean of its divisors is an integer number (10222632).

Almost surely, 2^68013145 is an apocalyptic number.

It is an amenable number.

68013145 is a deficient number, since it is larger than the sum of its proper divisors (13767911).

68013145 is a wasteful number, since it uses less digits than its factorization.

68013145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27551.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 68013145 is about 8247.0082454185. The cubic root of 68013145 is about 408.1918091621.

The spelling of 68013145 in words is "sixty-eight million, thirteen thousand, one hundred forty-five".