646066327 has 8 divisors (see below), whose sum is σ = 657219456. Its totient is φ = 634957752.

The previous prime is 646066303. The next prime is 646066331. The reversal of 646066327 is 723660646.

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 646066327 - 2¹⁵ = 646033559 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 646066327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646066627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18798 + ... + 40564.

It is an arithmetic number, because the mean of its divisors is an integer number (82152432).

Almost surely, 2^646066327 is an apocalyptic number.

646066327 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

646066327 is a deficient number, since it is larger than the sum of its proper divisors (11153129).

646066327 is a wasteful number, since it uses less digits than its factorization.

646066327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22277.

The product of its (nonzero) digits is 217728, while the sum is 40.

The square root of 646066327 is about 25417.8348212431. The cubic root of 646066327 is about 864.4881317877.

The spelling of 646066327 in words is "six hundred forty-six million, sixty-six thousand, three hundred twenty-seven".