66332031 has 8 divisors (see below), whose sum is σ = 88540464. Its totient is φ = 44172480.

The previous prime is 66331999. The next prime is 66332039. The reversal of 66332031 is 13023366.

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

It is not a de Polignac number, because 66332031 - 2⁵ = 66331999 is a prime.

It is a super-2 number, since 2×66332031² = 8799876673169922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66331992 and 66332010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66332039) 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, 8926 + ... + 14571.

It is an arithmetic number, because the mean of its divisors is an integer number (11067558).

Almost surely, 2^66332031 is an apocalyptic number.

66332031 is a deficient number, since it is larger than the sum of its proper divisors (22208433).

66332031 is a wasteful number, since it uses less digits than its factorization.

66332031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24441.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 66332031 is about 8144.4478634221. The cubic root of 66332031 is about 404.8005541368.

Adding to 66332031 its reverse (13023366), we get a palindrome (79355397).

The spelling of 66332031 in words is "sixty-six million, three hundred thirty-two thousand, thirty-one".