66516376 has 32 divisors (see below), whose sum is σ = 132503040. Its totient is φ = 31195648.

The previous prime is 66516371. The next prime is 66516379. The reversal of 66516376 is 67361566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66516371) 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 in 7 ways as a sum of consecutive naturals, for example, 51450 + ... + 52726.

It is an arithmetic number, because the mean of its divisors is an integer number (4140720).

Almost surely, 2^66516376 is an apocalyptic number.

It is an amenable number.

66516376 is a deficient number, since it is larger than the sum of its proper divisors (65986664).

66516376 is a wasteful number, since it uses less digits than its factorization.

66516376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683 (or 1679 counting only the distinct ones).

The product of its digits is 136080, while the sum is 40.

The square root of 66516376 is about 8155.7572303251. The cubic root of 66516376 is about 405.1752043861.

The spelling of 66516376 in words is "sixty-six million, five hundred sixteen thousand, three hundred seventy-six".