66973701 has 8 divisors (see below), whose sum is σ = 89483584. Its totient is φ = 44556480.

The previous prime is 66973679. The next prime is 66973703. The reversal of 66973701 is 10737966.

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

It is not a de Polignac number, because 66973701 - 2⁷ = 66973573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66973701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66973703) 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, 21460 + ... + 24381.

It is an arithmetic number, because the mean of its divisors is an integer number (11185448).

Almost surely, 2^66973701 is an apocalyptic number.

It is an amenable number.

66973701 is a deficient number, since it is larger than the sum of its proper divisors (22509883).

66973701 is a wasteful number, since it uses less digits than its factorization.

66973701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46331.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 66973701 is about 8183.7461470894. The cubic root of 66973701 is about 406.1016614713.

The spelling of 66973701 in words is "sixty-six million, nine hundred seventy-three thousand, seven hundred one".