66470450 has 18 divisors (see below), whose sum is σ = 123742359. Its totient is φ = 26565120.

The previous prime is 66470429. The next prime is 66470477. The reversal of 66470450 is 5407466.

66470450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 44182609 + 22287841 = 6647^2 + 4721^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5765.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 57074 + ... + 58226.

Almost surely, 2^66470450 is an apocalyptic number.

66470450 is a deficient number, since it is larger than the sum of its proper divisors (57271909).

66470450 is an equidigital number, since it uses as much as digits as its factorization.

66470450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2318 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 66470450 is about 8152.9411870809. The cubic root of 66470450 is about 405.0819323137.

Multiplying 66470450 by its sum of digits (32), we get a square (2127054400 = 46120²).

The spelling of 66470450 in words is "sixty-six million, four hundred seventy thousand, four hundred fifty".