68947542 has 36 divisors (see below), whose sum is σ = 157599780. Its totient is φ = 21724416.

The previous prime is 68947531. The next prime is 68947559. The reversal of 68947542 is 24574986.

It is a happy number.

68947542 is a `hidden beast` number, since 68 + 9 + 47 + 542 = 666.

It is a congruent number.

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 17 ways as a sum of consecutive naturals, for example, 153334 + ... + 153782.

Almost surely, 2^68947542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68947542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78799890).

68947542 is an abundant number, since it is smaller than the sum of its proper divisors (88652238).

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

68947542 is a wasteful number, since it uses less digits than its factorization.

68947542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 473 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 68947542 is about 8303.4656619992. The cubic root of 68947542 is about 410.0526246154.

The spelling of 68947542 in words is "sixty-eight million, nine hundred forty-seven thousand, five hundred forty-two".