66763303 has 4 divisors (see below), whose sum is σ = 66978288. Its totient is φ = 66548320.

The previous prime is 66763297. The next prime is 66763309. The reversal of 66763303 is 30336766.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66763297) and next prime (66763309).

It is a cyclic number.

It is not a de Polignac number, because 66763303 - 2⁵ = 66763271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66763309) 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 3 ways as a sum of consecutive naturals, for example, 107026 + ... + 107647.

It is an arithmetic number, because the mean of its divisors is an integer number (16744572).

Almost surely, 2^66763303 is an apocalyptic number.

66763303 is a deficient number, since it is larger than the sum of its proper divisors (214985).

66763303 is a wasteful number, since it uses less digits than its factorization.

66763303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214984.

The product of its (nonzero) digits is 40824, while the sum is 34.

The square root of 66763303 is about 8170.8814090036. The cubic root of 66763303 is about 405.6759590156.

The spelling of 66763303 in words is "sixty-six million, seven hundred sixty-three thousand, three hundred three".