68855145 has 16 divisors (see below), whose sum is σ = 115967040. Its totient is φ = 34789824.

The previous prime is 68855119. The next prime is 68855147. The reversal of 68855145 is 54155886.

It is not a de Polignac number, because 68855145 - 2⁸ = 68854889 is a prime.

It is a super-3 number, since 3×68855145³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68855097 and 68855106.

It is not an unprimeable number, because it can be changed into a prime (68855147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120514 + ... + 121083.

It is an arithmetic number, because the mean of its divisors is an integer number (7247940).

Almost surely, 2^68855145 is an apocalyptic number.

It is an amenable number.

68855145 is a deficient number, since it is larger than the sum of its proper divisors (47111895).

68855145 is a wasteful number, since it uses less digits than its factorization.

68855145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241624.

The product of its digits is 192000, while the sum is 42.

The square root of 68855145 is about 8297.9000355512. The cubic root of 68855145 is about 409.8693714331.

The spelling of 68855145 in words is "sixty-eight million, eight hundred fifty-five thousand, one hundred forty-five".