66471270 has 32 divisors (see below), whose sum is σ = 159770880. Its totient is φ = 17699040.

The previous prime is 66471239. The next prime is 66471281. The reversal of 66471270 is 7217466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26365 + ... + 28775.

It is an arithmetic number, because the mean of its divisors is an integer number (4992840).

Almost surely, 2^66471270 is an apocalyptic number.

66471270 is an abundant number, since it is smaller than the sum of its proper divisors (93299610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66471270 is a wasteful number, since it uses less digits than its factorization.

66471270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340.

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

The square root of 66471270 is about 8152.9914755260. The cubic root of 66471270 is about 405.0835980455.

The spelling of 66471270 in words is "sixty-six million, four hundred seventy-one thousand, two hundred seventy".