320655001 has 24 divisors (see below), whose sum is σ = 354558600. Its totient is φ = 289578240.

The previous prime is 320654989. The next prime is 320655007. The reversal of 320655001 is 100556023.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101022601 + 219632400 = 10051^2 + 14820^2 .

It is a de Polignac number, because none of the positive numbers 2^k-320655001 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 (320655007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1140981 + ... + 1141261.

It is an arithmetic number, because the mean of its divisors is an integer number (14773275).

Almost surely, 2^320655001 is an apocalyptic number.

It is an amenable number.

320655001 is a deficient number, since it is larger than the sum of its proper divisors (33903599).

320655001 is a wasteful number, since it uses less digits than its factorization.

320655001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 320655001 is about 17906.8422956143. The cubic root of 320655001 is about 684.4567422667.

The spelling of 320655001 in words is "three hundred twenty million, six hundred fifty-five thousand, one".