66473450 has 24 divisors (see below), whose sum is σ = 129018528. Its totient is φ = 25432880.

The previous prime is 66473443. The next prime is 66473489. The reversal of 66473450 is 5437466.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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 66473450.

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, 27752 + ... + 30051.

It is an arithmetic number, because the mean of its divisors is an integer number (5375772).

Almost surely, 2^66473450 is an apocalyptic number.

66473450 is a deficient number, since it is larger than the sum of its proper divisors (62545078).

66473450 is a wasteful number, since it uses less digits than its factorization.

66473450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57838 (or 57833 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 66473450 is about 8153.1251676888. The cubic root of 66473450 is about 405.0880263877.

The spelling of 66473450 in words is "sixty-six million, four hundred seventy-three thousand, four hundred fifty".