66763336 has 32 divisors (see below), whose sum is σ = 133689600. Its totient is φ = 31187520.

The previous prime is 66763331. The next prime is 66763337. The reversal of 66763336 is 63336766.

It is not an unprimeable number, because it can be changed into a prime (66763331) 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, 2551 + ... + 11833.

It is an arithmetic number, because the mean of its divisors is an integer number (4177800).

Almost surely, 2^66763336 is an apocalyptic number.

It is an amenable number.

66763336 is an abundant number, since it is smaller than the sum of its proper divisors (66926264).

66763336 is a wasteful number, since it uses less digits than its factorization.

66763336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9349 (or 9345 counting only the distinct ones).

The product of its digits is 244944, while the sum is 40.

The square root of 66763336 is about 8170.8834283693. The cubic root of 66763336 is about 405.6760258553.

The spelling of 66763336 in words is "sixty-six million, seven hundred sixty-three thousand, three hundred thirty-six".