66673460 has 48 divisors (see below), whose sum is σ = 161844480. Its totient is φ = 22598400.

The previous prime is 66673459. The next prime is 66673463. The reversal of 66673460 is 6437666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66673463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9785 + ... + 15135.

It is an arithmetic number, because the mean of its divisors is an integer number (3371760).

Almost surely, 2^66673460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66673460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80922240).

66673460 is an abundant number, since it is smaller than the sum of its proper divisors (95171020).

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

66673460 is a wasteful number, since it uses less digits than its factorization.

66673460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5456 (or 5454 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 66673460 is about 8165.3818036881. The cubic root of 66673460 is about 405.4939053790.

The spelling of 66673460 in words is "sixty-six million, six hundred seventy-three thousand, four hundred sixty".