66724486 has 8 divisors (see below), whose sum is σ = 100250280. Its totient is φ = 33307728.

The previous prime is 66724477. The next prime is 66724517. The reversal of 66724486 is 68442766.

66724486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25711 + ... + 28186.

It is an arithmetic number, because the mean of its divisors is an integer number (12531285).

Almost surely, 2^66724486 is an apocalyptic number.

66724486 is a deficient number, since it is larger than the sum of its proper divisors (33525794).

66724486 is a wasteful number, since it uses less digits than its factorization.

66724486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54518.

The product of its digits is 387072, while the sum is 43.

The square root of 66724486 is about 8168.5057385057. The cubic root of 66724486 is about 405.5973221206.

The spelling of 66724486 in words is "sixty-six million, seven hundred twenty-four thousand, four hundred eighty-six".