68664542 has 8 divisors (see below), whose sum is σ = 103033296. Its totient is φ = 34320112.

The previous prime is 68664539. The next prime is 68664551. The reversal of 68664542 is 24546686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 68664542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5063 + ... + 12765.

It is an arithmetic number, because the mean of its divisors is an integer number (12879162).

Almost surely, 2^68664542 is an apocalyptic number.

68664542 is a deficient number, since it is larger than the sum of its proper divisors (34368754).

68664542 is a wasteful number, since it uses less digits than its factorization.

68664542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162.

The product of its digits is 276480, while the sum is 41.

The square root of 68664542 is about 8286.4070621712. The cubic root of 68664542 is about 409.4908253891.

The spelling of 68664542 in words is "sixty-eight million, six hundred sixty-four thousand, five hundred forty-two".