321470661 has 8 divisors (see below), whose sum is σ = 430996384. Its totient is φ = 213129360.

The previous prime is 321470659. The next prime is 321470687. The reversal of 321470661 is 166074123.

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

It is not a de Polignac number, because 321470661 - 2¹ = 321470659 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 (321470621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295471 + ... + 296556.

It is an arithmetic number, because the mean of its divisors is an integer number (53874548).

Almost surely, 2^321470661 is an apocalyptic number.

It is an amenable number.

321470661 is a deficient number, since it is larger than the sum of its proper divisors (109525723).

321470661 is a wasteful number, since it uses less digits than its factorization.

321470661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592211.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 321470661 is about 17929.6029236567. The cubic root of 321470661 is about 685.0366087668.

The spelling of 321470661 in words is "three hundred twenty-one million, four hundred seventy thousand, six hundred sixty-one".