68423594 has 4 divisors (see below), whose sum is σ = 102635394. Its totient is φ = 34211796.

The previous prime is 68423581. The next prime is 68423599. The reversal of 68423594 is 49532486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49532486 = 2 ⋅24766243.

It can be written as a sum of positive squares in only one way, i.e., 67453369 + 970225 = 8213^2 + 985^2 .

It is not an unprimeable number, because it can be changed into a prime (68423599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17105897 + ... + 17105900.

Almost surely, 2^68423594 is an apocalyptic number.

68423594 is a deficient number, since it is larger than the sum of its proper divisors (34211800).

68423594 is a wasteful number, since it uses less digits than its factorization.

68423594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34211799.

The product of its digits is 207360, while the sum is 41.

The square root of 68423594 is about 8271.8555354890. The cubic root of 68423594 is about 409.0112880794.

The spelling of 68423594 in words is "sixty-eight million, four hundred twenty-three thousand, five hundred ninety-four".