66670450 has 48 divisors (see below), whose sum is σ = 154615104. Its totient is φ = 20779200.

The previous prime is 66670441. The next prime is 66670453. The reversal of 66670450 is 5407666.

It is not an unprimeable number, because it can be changed into a prime (66670453) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4809 + ... + 12508.

It is an arithmetic number, because the mean of its divisors is an integer number (3221148).

Almost surely, 2^66670450 is an apocalyptic number.

66670450 is an abundant number, since it is smaller than the sum of its proper divisors (87944654).

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

66670450 is a wasteful number, since it uses less digits than its factorization.

66670450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17347 (or 17342 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 66670450 is about 8165.1974868952. The cubic root of 66670450 is about 405.4878032257.

The spelling of 66670450 in words is "sixty-six million, six hundred seventy thousand, four hundred fifty".