66342730 has 32 divisors (see below), whose sum is σ = 122762304. Its totient is φ = 25804416.

The previous prime is 66342719. The next prime is 66342743. The reversal of 66342730 is 3724366.

It is a junction number, because it is equal to n+sod(n) for n = 66342692 and 66342701.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55014 + ... + 56206.

It is an arithmetic number, because the mean of its divisors is an integer number (3836322).

Almost surely, 2^66342730 is an apocalyptic number.

66342730 is a deficient number, since it is larger than the sum of its proper divisors (56419574).

66342730 is a wasteful number, since it uses less digits than its factorization.

66342730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 66342730 is about 8145.1046647664. The cubic root of 66342730 is about 404.8223170178.

The spelling of 66342730 in words is "sixty-six million, three hundred forty-two thousand, seven hundred thirty".