66732631 has 8 divisors (see below), whose sum is σ = 76323744. Its totient is φ = 57156000.

The previous prime is 66732629. The next prime is 66732641. The reversal of 66732631 is 13623766.

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

It is a cyclic number.

It is not a de Polignac number, because 66732631 - 2¹ = 66732629 is a prime.

It is a super-2 number, since 2×66732631² = 8906488080364322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66732641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9381 + ... + 14881.

It is an arithmetic number, because the mean of its divisors is an integer number (9540468).

Almost surely, 2^66732631 is an apocalyptic number.

66732631 is a deficient number, since it is larger than the sum of its proper divisors (9591113).

66732631 is a wasteful number, since it uses less digits than its factorization.

66732631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7241.

The product of its digits is 27216, while the sum is 34.

The square root of 66732631 is about 8169.0042844890. The cubic root of 66732631 is about 405.6138250867.

The spelling of 66732631 in words is "sixty-six million, seven hundred thirty-two thousand, six hundred thirty-one".