66517292 has 6 divisors (see below), whose sum is σ = 116405268. Its totient is φ = 33258644.

The previous prime is 66517291. The next prime is 66517303. The reversal of 66517292 is 29271566.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66517291) 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, 8314658 + ... + 8314665.

It is an arithmetic number, because the mean of its divisors is an integer number (19400878).

Almost surely, 2^66517292 is an apocalyptic number.

It is an amenable number.

66517292 is a deficient number, since it is larger than the sum of its proper divisors (49887976).

66517292 is a wasteful number, since it uses less digits than its factorization.

66517292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16629327 (or 16629325 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 66517292 is about 8155.8133867812. The cubic root of 66517292 is about 405.1770642729.

The spelling of 66517292 in words is "sixty-six million, five hundred seventeen thousand, two hundred ninety-two".