68667305 has 32 divisors (see below), whose sum is σ = 98993664. Its totient is φ = 44706816.

The previous prime is 68667299. The next prime is 68667307. The reversal of 68667305 is 50376686.

It is not a de Polignac number, because 68667305 - 2⁴ = 68667289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68667307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158369 + ... + 158801.

It is an arithmetic number, because the mean of its divisors is an integer number (3093552).

Almost surely, 2^68667305 is an apocalyptic number.

It is an amenable number.

68667305 is a deficient number, since it is larger than the sum of its proper divisors (30326359).

68667305 is a wasteful number, since it uses less digits than its factorization.

68667305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 68667305 is about 8286.5737793131. The cubic root of 68667305 is about 409.4963178307.

The spelling of 68667305 in words is "sixty-eight million, six hundred sixty-seven thousand, three hundred five".