68782642 has 8 divisors (see below), whose sum is σ = 103831596. Its totient is φ = 34172112.

The previous prime is 68782639. The next prime is 68782643. The reversal of 68782642 is 24628786.

It can be written as a sum of positive squares in 2 ways, for example, as 64657681 + 4124961 = 8041^2 + 2031^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68782643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109213 + ... + 109840.

Almost surely, 2^68782642 is an apocalyptic number.

68782642 is a deficient number, since it is larger than the sum of its proper divisors (35048954).

68782642 is a wasteful number, since it uses less digits than its factorization.

68782642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219212.

The product of its digits is 258048, while the sum is 43.

The square root of 68782642 is about 8293.5301289620. The cubic root of 68782642 is about 409.7254596721.

The spelling of 68782642 in words is "sixty-eight million, seven hundred eighty-two thousand, six hundred forty-two".