66471207 has 32 divisors (see below), whose sum is σ = 104592384. Its totient is φ = 37094400.

The previous prime is 66471193. The next prime is 66471217. The reversal of 66471207 is 70217466.

It is not a de Polignac number, because 66471207 - 2⁴ = 66471191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66471217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25107 + ... + 27627.

It is an arithmetic number, because the mean of its divisors is an integer number (3268512).

Almost surely, 2^66471207 is an apocalyptic number.

66471207 is a deficient number, since it is larger than the sum of its proper divisors (38121177).

66471207 is a wasteful number, since it uses less digits than its factorization.

66471207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 66471207 is about 8152.9876119126. The cubic root of 66471207 is about 405.0834700690.

The spelling of 66471207 in words is "sixty-six million, four hundred seventy-one thousand, two hundred seven".