66831246 has 24 divisors (see below), whose sum is σ = 152422920. Its totient is φ = 21104496.

The previous prime is 66831211. The next prime is 66831277. The reversal of 66831246 is 64213866.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66831246.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97365 + ... + 98048.

It is an arithmetic number, because the mean of its divisors is an integer number (6350955).

Almost surely, 2^66831246 is an apocalyptic number.

66831246 is an abundant number, since it is smaller than the sum of its proper divisors (85591674).

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

66831246 is a wasteful number, since it uses less digits than its factorization.

66831246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195440 (or 195437 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 66831246 is about 8175.0379815631. The cubic root of 66831246 is about 405.8135270896.

The spelling of 66831246 in words is "sixty-six million, eight hundred thirty-one thousand, two hundred forty-six".