68521742 has 16 divisors (see below), whose sum is σ = 106741152. Its totient is φ = 32964480.

The previous prime is 68521721. The next prime is 68521759. The reversal of 68521742 is 24712586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263 + ... + 11709.

It is an arithmetic number, because the mean of its divisors is an integer number (6671322).

Almost surely, 2^68521742 is an apocalyptic number.

68521742 is a deficient number, since it is larger than the sum of its proper divisors (38219410).

68521742 is a wasteful number, since it uses less digits than its factorization.

68521742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11563.

The product of its digits is 26880, while the sum is 35.

The square root of 68521742 is about 8277.7860566700. The cubic root of 68521742 is about 409.2067589621.

The spelling of 68521742 in words is "sixty-eight million, five hundred twenty-one thousand, seven hundred forty-two".