320641277 has 8 divisors (see below), whose sum is σ = 361074432. Its totient is φ = 282088800.

The previous prime is 320641273. The next prime is 320641291. The reversal of 320641277 is 772146023.

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 320641277 - 2² = 320641273 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320641271) 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, 469808 + ... + 470489.

It is an arithmetic number, because the mean of its divisors is an integer number (45134304).

Almost surely, 2^320641277 is an apocalyptic number.

It is an amenable number.

320641277 is a deficient number, since it is larger than the sum of its proper divisors (40433155).

320641277 is a wasteful number, since it uses less digits than its factorization.

320641277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940339.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 320641277 is about 17906.4590860393. The cubic root of 320641277 is about 684.4469772354.

The spelling of 320641277 in words is "three hundred twenty million, six hundred forty-one thousand, two hundred seventy-seven".