320472606609 has 9 divisors (see below), whose sum is σ = 462907329339. Its totient is φ = 213647272200.

The previous prime is 320472606557. The next prime is 320472606661. The reversal of 320472606609 is 906606274023.

The square root of 320472606609 is 566103.

It is a perfect power (a square), and thus also a powerful number.

320472606609 is a `hidden beast` number, since 32 + 0 + 4 + 7 + 2 + 6 + 0 + 6 + 609 = 666.

It is an interprime number because it is at equal distance from previous prime (320472606557) and next prime (320472606661).

It can be written as a sum of positive squares in only one way, i.e., 273270699009 + 47201907600 = 522753^2 + 217260^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 320472606609 - 2³⁵ = 286112868241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320472606709) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1603959 + ... + 1792659.

Almost surely, 2^320472606609 is an apocalyptic number.

320472606609 is the 566103-rd square number.

320472606609 is the 283052-nd centered octagonal number.

It is an amenable number.

320472606609 is a deficient number, since it is larger than the sum of its proper divisors (142434722730).

320472606609 is an frugal number, since it uses more digits than its factorization.

320472606609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377408 (or 188704 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 320472606609 in words is "three hundred twenty billion, four hundred seventy-two million, six hundred six thousand, six hundred nine".