68193642 has 32 divisors (see below), whose sum is σ = 149356224. Its totient is φ = 20585600.

The previous prime is 68193637. The next prime is 68193673. The reversal of 68193642 is 24639186.

It is a self number, because there is not a number n which added to its sum of digits gives 68193642.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16708 + ... + 20384.

It is an arithmetic number, because the mean of its divisors is an integer number (4667382).

Almost surely, 2^68193642 is an apocalyptic number.

68193642 is an abundant number, since it is smaller than the sum of its proper divisors (81162582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68193642 is a wasteful number, since it uses less digits than its factorization.

68193642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3974.

The product of its digits is 62208, while the sum is 39.

The square root of 68193642 is about 8257.9441751564. The cubic root of 68193642 is about 408.5525841100.

Adding to 68193642 its sum of digits (39), we get a triangular number (68193681 = T₁₁₆₇₈).

The spelling of 68193642 in words is "sixty-eight million, one hundred ninety-three thousand, six hundred forty-two".