66672063 has 6 divisors (see below), whose sum is σ = 96304104. Its totient is φ = 44448036.

The previous prime is 66672061. The next prime is 66672071. The reversal of 66672063 is 36027666.

66672063 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 66672063 - 2¹ = 66672061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66672061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3703995 + ... + 3704012.

It is an arithmetic number, because the mean of its divisors is an integer number (16050684).

Almost surely, 2^66672063 is an apocalyptic number.

66672063 is a deficient number, since it is larger than the sum of its proper divisors (29632041).

66672063 is a wasteful number, since it uses less digits than its factorization.

66672063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408013 (or 7408010 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 66672063 is about 8165.2962591690. The cubic root of 66672063 is about 405.4910732728.

The spelling of 66672063 in words is "sixty-six million, six hundred seventy-two thousand, sixty-three".