66976324 has 6 divisors (see below), whose sum is σ = 117208574. Its totient is φ = 33488160.

The previous prime is 66976319. The next prime is 66976331. The reversal of 66976324 is 42367966.

It can be written as a sum of positive squares in only one way, i.e., 66716224 + 260100 = 8168^2 + 510^2 .

It is an unprimeable number.

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, 8372037 + ... + 8372044.

Almost surely, 2^66976324 is an apocalyptic number.

It is an amenable number.

66976324 is a deficient number, since it is larger than the sum of its proper divisors (50232250).

66976324 is a wasteful number, since it uses less digits than its factorization.

66976324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16744085 (or 16744083 counting only the distinct ones).

The product of its digits is 326592, while the sum is 43.

The square root of 66976324 is about 8183.9064022018. The cubic root of 66976324 is about 406.1069630088.

The spelling of 66976324 in words is "sixty-six million, nine hundred seventy-six thousand, three hundred twenty-four".