66474005 has 8 divisors (see below), whose sum is σ = 85904952. Its totient is φ = 49088448.

The previous prime is 66473993. The next prime is 66474017. The reversal of 66474005 is 50047466.

66474005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66473993) and next prime (66474017).

It can be written as a sum of positive squares in 4 ways, for example, as 2617924 + 63856081 = 1618^2 + 7991^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 66474005 - 2¹⁴ = 66457621 is a prime.

It is a Duffinian number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 511274 + ... + 511403.

It is an arithmetic number, because the mean of its divisors is an integer number (10738119).

Almost surely, 2^66474005 is an apocalyptic number.

66474005 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66474005 is a deficient number, since it is larger than the sum of its proper divisors (19430947).

66474005 is a wasteful number, since it uses less digits than its factorization.

66474005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022695.

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

The square root of 66474005 is about 8153.1592036462. The cubic root of 66474005 is about 405.0891537713.

The spelling of 66474005 in words is "sixty-six million, four hundred seventy-four thousand, five".