66532473 has 12 divisors (see below), whose sum is σ = 109831488. Its totient is φ = 38018520.

The previous prime is 66532447. The next prime is 66532511. The reversal of 66532473 is 37423566.

It is not a de Polignac number, because 66532473 - 2⁹ = 66531961 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66530473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 527973 + ... + 528098.

It is an arithmetic number, because the mean of its divisors is an integer number (9152624).

Almost surely, 2^66532473 is an apocalyptic number.

66532473 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

66532473 is a deficient number, since it is larger than the sum of its proper divisors (43299015).

66532473 is a wasteful number, since it uses less digits than its factorization.

66532473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056084 (or 1056081 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 66532473 is about 8156.7440195215. The cubic root of 66532473 is about 405.2078859582.

The spelling of 66532473 in words is "sixty-six million, five hundred thirty-two thousand, four hundred seventy-three".