68515742 has 16 divisors (see below), whose sum is σ = 104397552. Its totient is φ = 33720960.

The previous prime is 68515739. The next prime is 68515757. The reversal of 68515742 is 24751586.

It is a junction number, because it is equal to n+sod(n) for n = 68515696 and 68515705.

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, 34517 + ... + 36447.

It is an arithmetic number, because the mean of its divisors is an integer number (6524847).

Almost surely, 2^68515742 is an apocalyptic number.

68515742 is a deficient number, since it is larger than the sum of its proper divisors (35881810).

68515742 is a wasteful number, since it uses less digits than its factorization.

68515742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203.

The product of its digits is 67200, while the sum is 38.

The square root of 68515742 is about 8277.4236329911. The cubic root of 68515742 is about 409.1948147619.

The spelling of 68515742 in words is "sixty-eight million, five hundred fifteen thousand, seven hundred forty-two".