66713301 has 10 divisors (see below), whose sum is σ = 99658262. Its totient is φ = 44475480.

The previous prime is 66713293. The next prime is 66713303. The reversal of 66713301 is 10331766.

It can be written as a sum of positive squares in only one way, i.e., 45562500 + 21150801 = 6750^2 + 4599^2 .

It is not a de Polignac number, because 66713301 - 2³ = 66713293 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66713303) 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 9 ways as a sum of consecutive naturals, for example, 411730 + ... + 411891.

Almost surely, 2^66713301 is an apocalyptic number.

It is an amenable number.

66713301 is a deficient number, since it is larger than the sum of its proper divisors (32944961).

66713301 is an equidigital number, since it uses as much as digits as its factorization.

66713301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823633 (or 823624 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 66713301 is about 8167.8210680695. The cubic root of 66713301 is about 405.5746574797.

The spelling of 66713301 in words is "sixty-six million, seven hundred thirteen thousand, three hundred one".