66432047 has 8 divisors (see below), whose sum is σ = 72530640. Its totient is φ = 60343360.

The previous prime is 66432029. The next prime is 66432061. The reversal of 66432047 is 74023466.

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

It is not a de Polignac number, because 66432047 - 2¹⁰ = 66431023 is a prime.

It is a super-2 number, since 2×66432047² = 8826433737220418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66432007) 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 7 ways as a sum of consecutive naturals, for example, 22979 + ... + 25707.

It is an arithmetic number, because the mean of its divisors is an integer number (9066330).

Almost surely, 2^66432047 is an apocalyptic number.

66432047 is a deficient number, since it is larger than the sum of its proper divisors (6098593).

66432047 is a wasteful number, since it uses less digits than its factorization.

66432047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4953.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 66432047 is about 8150.5856844769. The cubic root of 66432047 is about 405.0039058710.

The spelling of 66432047 in words is "sixty-six million, four hundred thirty-two thousand, forty-seven".