66761373 has 12 divisors (see below), whose sum is σ = 103548480. Its totient is φ = 38149272.

The previous prime is 66761353. The next prime is 66761411. The reversal of 66761373 is 37316766.

It is not a de Polignac number, because 66761373 - 2⁶ = 66761309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66761353) 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 11 ways as a sum of consecutive naturals, for example, 226933 + ... + 227226.

It is an arithmetic number, because the mean of its divisors is an integer number (8629040).

Almost surely, 2^66761373 is an apocalyptic number.

It is an amenable number.

66761373 is a deficient number, since it is larger than the sum of its proper divisors (36787107).

66761373 is a wasteful number, since it uses less digits than its factorization.

66761373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454176 (or 454169 counting only the distinct ones).

The product of its digits is 95256, while the sum is 39.

The square root of 66761373 is about 8170.7633058362. The cubic root of 66761373 is about 405.6720498714.

The spelling of 66761373 in words is "sixty-six million, seven hundred sixty-one thousand, three hundred seventy-three".