66320476 has 6 divisors (see below), whose sum is σ = 116060840. Its totient is φ = 33160236.

The previous prime is 66320459. The next prime is 66320489. The reversal of 66320476 is 67402366.

It is a congruent number.

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, 8290056 + ... + 8290063.

Almost surely, 2^66320476 is an apocalyptic number.

It is an amenable number.

66320476 is a deficient number, since it is larger than the sum of its proper divisors (49740364).

66320476 is a wasteful number, since it uses less digits than its factorization.

66320476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16580123 (or 16580121 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 66320476 is about 8143.7384535605. The cubic root of 66320476 is about 404.7770474339. Note that the first 3 decimals are identical.

The spelling of 66320476 in words is "sixty-six million, three hundred twenty thousand, four hundred seventy-six".