66942846 has 48 divisors (see below), whose sum is σ = 150930000. Its totient is φ = 21417984.

The previous prime is 66942839. The next prime is 66942851. The reversal of 66942846 is 64824966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133905 + ... + 134403.

It is an arithmetic number, because the mean of its divisors is an integer number (3144375).

Almost surely, 2^66942846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66942846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75465000).

66942846 is an abundant number, since it is smaller than the sum of its proper divisors (83987154).

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

66942846 is a wasteful number, since it uses less digits than its factorization.

66942846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 790 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 66942846 is about 8181.8607907981. The cubic root of 66942846 is about 406.0392877768.

The spelling of 66942846 in words is "sixty-six million, nine hundred forty-two thousand, eight hundred forty-six".