66963772 has 6 divisors (see below), whose sum is σ = 117186608. Its totient is φ = 33481884.

The previous prime is 66963769. The next prime is 66963773. The reversal of 66963772 is 27736966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66963773) 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 as a sum of consecutive naturals, namely, 8370468 + ... + 8370475.

Almost surely, 2^66963772 is an apocalyptic number.

It is an amenable number.

66963772 is a deficient number, since it is larger than the sum of its proper divisors (50222836).

66963772 is a wasteful number, since it uses less digits than its factorization.

66963772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16740947 (or 16740945 counting only the distinct ones).

The product of its digits is 571536, while the sum is 46.

The square root of 66963772 is about 8183.1394953282. The cubic root of 66963772 is about 406.0815919882.

The spelling of 66963772 in words is "sixty-six million, nine hundred sixty-three thousand, seven hundred seventy-two".