68730673 has 4 divisors (see below), whose sum is σ = 74978928. Its totient is φ = 62482420.

The previous prime is 68730661. The next prime is 68730691. The reversal of 68730673 is 37603786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68730673 - 2¹³ = 68722481 is a prime.

It is a super-2 number, since 2×68730673² = 9447810822065858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68730653) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3124111 + ... + 3124132.

It is an arithmetic number, because the mean of its divisors is an integer number (18744732).

Almost surely, 2^68730673 is an apocalyptic number.

It is an amenable number.

68730673 is a deficient number, since it is larger than the sum of its proper divisors (6248255).

68730673 is a wasteful number, since it uses less digits than its factorization.

68730673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248254.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 68730673 is about 8290.3964320170. The cubic root of 68730673 is about 409.6222437700.

The spelling of 68730673 in words is "sixty-eight million, seven hundred thirty thousand, six hundred seventy-three".