66028703 has 8 divisors (see below), whose sum is σ = 71222928. Its totient is φ = 60850944.

The previous prime is 66028691. The next prime is 66028723. The reversal of 66028703 is 30782066.

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

It is a cyclic number.

It is not a de Polignac number, because 66028703 - 2¹⁶ = 65963167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66028703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66028723) 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, 4976 + ... + 12522.

It is an arithmetic number, because the mean of its divisors is an integer number (8902866).

Almost surely, 2^66028703 is an apocalyptic number.

66028703 is a deficient number, since it is larger than the sum of its proper divisors (5194225).

66028703 is a wasteful number, since it uses less digits than its factorization.

66028703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8233.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 66028703 is about 8125.8047601453. The cubic root of 66028703 is about 404.1825772648.

The spelling of 66028703 in words is "sixty-six million, twenty-eight thousand, seven hundred three".