320666076 has 18 divisors (see below), whose sum is σ = 810572672. Its totient is φ = 106888680.

The previous prime is 320666057. The next prime is 320666083. The reversal of 320666076 is 670666023.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 8907391 = 320666076 / (3 + 2 + 0 + 6 + 6 + 6 + 0 + 7 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 320666076.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4453660 + ... + 4453731.

Almost surely, 2^320666076 is an apocalyptic number.

320666076 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

320666076 is an abundant number, since it is smaller than the sum of its proper divisors (489906596).

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

320666076 is a wasteful number, since it uses less digits than its factorization.

320666076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8907401 (or 8907396 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 320666076 is about 17907.1515322789. The cubic root of 320666076 is about 684.4646222531.

The spelling of 320666076 in words is "three hundred twenty million, six hundred sixty-six thousand, seventy-six".