66673456 has 30 divisors (see below), whose sum is σ = 137235140. Its totient is φ = 31373568.

The previous prime is 66673441. The next prime is 66673459. The reversal of 66673456 is 65437666.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66673459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2586 + ... + 11833.

Almost surely, 2^66673456 is an apocalyptic number.

It is an amenable number.

66673456 is an abundant number, since it is smaller than the sum of its proper divisors (70561684).

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

66673456 is a wasteful number, since it uses less digits than its factorization.

66673456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14461 (or 14438 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The square root of 66673456 is about 8165.3815587516. The cubic root of 66673456 is about 405.4938972699.

The spelling of 66673456 in words is "sixty-six million, six hundred seventy-three thousand, four hundred fifty-six".