66854710 has 64 divisors (see below), whose sum is σ = 138801600. Its totient is φ = 23102976.

The previous prime is 66854701. The next prime is 66854713. The reversal of 66854710 is 1745866.

It is a super-3 number, since 3×66854710³ (a number of 24 digits) contains 333 as substring.

Together with 71946890 it forms an amicable pair .

It is a self number, because there is not a number n which added to its sum of digits gives 66854710.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66854713) 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 31 ways as a sum of consecutive naturals, for example, 373401 + ... + 373579.

It is an arithmetic number, because the mean of its divisors is an integer number (2168775).

Almost surely, 2^66854710 is an apocalyptic number.

66854710 is an abundant number, since it is smaller than the sum of its proper divisors (71946890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66854710 is a wasteful number, since it uses less digits than its factorization.

66854710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 66854710 is about 8176.4729559878. The cubic root of 66854710 is about 405.8610143305.

The spelling of 66854710 in words is "sixty-six million, eight hundred fifty-four thousand, seven hundred ten".