66471315 has 16 divisors (see below), whose sum is σ = 106540800. Its totient is φ = 35389152.

The previous prime is 66471281. The next prime is 66471331. The reversal of 66471315 is 51317466.

It is not a de Polignac number, because 66471315 - 2¹⁹ = 65947027 is a prime.

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, 5706 + ... + 12864.

It is an arithmetic number, because the mean of its divisors is an integer number (6658800).

Almost surely, 2^66471315 is an apocalyptic number.

66471315 is a deficient number, since it is larger than the sum of its proper divisors (40069485).

66471315 is a wasteful number, since it uses less digits than its factorization.

66471315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7786.

The product of its digits is 15120, while the sum is 33.

The square root of 66471315 is about 8152.9942352488. The cubic root of 66471315 is about 405.0836894572.

The spelling of 66471315 in words is "sixty-six million, four hundred seventy-one thousand, three hundred fifteen".