68985642 has 16 divisors (see below), whose sum is σ = 150514272. Its totient is φ = 20904720.

The previous prime is 68985619. The next prime is 68985733. The reversal of 68985642 is 24658986.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68985591 and 68985600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522553 + ... + 522684.

It is an arithmetic number, because the mean of its divisors is an integer number (9407142).

Almost surely, 2^68985642 is an apocalyptic number.

68985642 is an abundant number, since it is smaller than the sum of its proper divisors (81528630).

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

68985642 is a wasteful number, since it uses less digits than its factorization.

68985642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045253.

The product of its digits is 829440, while the sum is 48.

The square root of 68985642 is about 8305.7595679143. The cubic root of 68985642 is about 410.1281415843.

The spelling of 68985642 in words is "sixty-eight million, nine hundred eighty-five thousand, six hundred forty-two".