66976803 has 6 divisors (see below), whose sum is σ = 96744284. Its totient is φ = 44651196.

The previous prime is 66976799. The next prime is 66976823. The reversal of 66976803 is 30867966.

It is not a de Polignac number, because 66976803 - 2² = 66976799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66976823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3720925 + ... + 3720942.

Almost surely, 2^66976803 is an apocalyptic number.

66976803 is a deficient number, since it is larger than the sum of its proper divisors (29767481).

66976803 is a wasteful number, since it uses less digits than its factorization.

66976803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7441873 (or 7441870 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 66976803 is about 8183.9356669026. The cubic root of 66976803 is about 406.1079311358.

The spelling of 66976803 in words is "sixty-six million, nine hundred seventy-six thousand, eight hundred three".