66472850 has 12 divisors (see below), whose sum is σ = 123639594. Its totient is φ = 26589120.

The previous prime is 66472841. The next prime is 66472853. The reversal of 66472850 is 5827466.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 39526369 + 26946481 = 6287^2 + 5191^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66472853) 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, 664679 + ... + 664778.

Almost surely, 2^66472850 is an apocalyptic number.

66472850 is a deficient number, since it is larger than the sum of its proper divisors (57166744).

66472850 is a wasteful number, since it uses less digits than its factorization.

66472850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329469 (or 1329464 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 66472850 is about 8153.0883718993. The cubic root of 66472850 is about 405.0868075876.

The spelling of 66472850 in words is "sixty-six million, four hundred seventy-two thousand, eight hundred fifty".