68730667 has 4 divisors (see below), whose sum is σ = 71100720. Its totient is φ = 66360616.

The previous prime is 68730661. The next prime is 68730691. The reversal of 68730667 is 76603786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68730667 - 2⁷ = 68730539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68730661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1184983 + ... + 1185040.

It is an arithmetic number, because the mean of its divisors is an integer number (17775180).

Almost surely, 2^68730667 is an apocalyptic number.

68730667 is a deficient number, since it is larger than the sum of its proper divisors (2370053).

68730667 is a wasteful number, since it uses less digits than its factorization.

68730667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370052.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 68730667 is about 8290.3960701525. The cubic root of 68730667 is about 409.6222318503.

The spelling of 68730667 in words is "sixty-eight million, seven hundred thirty thousand, six hundred sixty-seven".