66446474 has 8 divisors (see below), whose sum is σ = 100098180. Its totient is φ = 33080416.

The previous prime is 66446473. The next prime is 66446503. The reversal of 66446474 is 47464466.

It can be written as a sum of positive squares in 2 ways, for example, as 51739249 + 14707225 = 7193^2 + 3835^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66446473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70829 + ... + 71760.

Almost surely, 2^66446474 is an apocalyptic number.

66446474 is a deficient number, since it is larger than the sum of its proper divisors (33651706).

66446474 is a wasteful number, since it uses less digits than its factorization.

66446474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142824.

The product of its digits is 387072, while the sum is 41.

The square root of 66446474 is about 8151.4706648555. The cubic root of 66446474 is about 405.0332218848.

The spelling of 66446474 in words is "sixty-six million, four hundred forty-six thousand, four hundred seventy-four".