66853070 has 8 divisors (see below), whose sum is σ = 120335544. Its totient is φ = 26741224.

The previous prime is 66853067. The next prime is 66853093. The reversal of 66853070 is 7035866.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66853070.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3342644 + ... + 3342663.

It is an arithmetic number, because the mean of its divisors is an integer number (15041943).

Almost surely, 2^66853070 is an apocalyptic number.

66853070 is a deficient number, since it is larger than the sum of its proper divisors (53482474).

66853070 is a wasteful number, since it uses less digits than its factorization.

66853070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685314.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66853070 is about 8176.3726676320. The cubic root of 66853070 is about 405.8576956040.

The spelling of 66853070 in words is "sixty-six million, eight hundred fifty-three thousand, seventy".