68564542 has 4 divisors (see below), whose sum is σ = 102846816. Its totient is φ = 34282270.

The previous prime is 68564533. The next prime is 68564609. The reversal of 68564542 is 24546586.

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

It is a junction number, because it is equal to n+sod(n) for n = 68564495 and 68564504.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17141134 + ... + 17141137.

It is an arithmetic number, because the mean of its divisors is an integer number (25711704).

Almost surely, 2^68564542 is an apocalyptic number.

68564542 is a deficient number, since it is larger than the sum of its proper divisors (34282274).

68564542 is a wasteful number, since it uses less digits than its factorization.

68564542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34282273.

The product of its digits is 230400, while the sum is 40.

The square root of 68564542 is about 8280.3708854133. The cubic root of 68564542 is about 409.2919407039.

The spelling of 68564542 in words is "sixty-eight million, five hundred sixty-four thousand, five hundred forty-two".