320650465 has 8 divisors (see below), whose sum is σ = 391088808. Its totient is φ = 252314880.

The previous prime is 320650459. The next prime is 320650471. The reversal of 320650465 is 564056023.

It is an interprime number because it is at equal distance from previous prime (320650459) and next prime (320650471).

It can be written as a sum of positive squares in 4 ways, for example, as 34668544 + 285981921 = 5888^2 + 16911^2 .

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

It is not a de Polignac number, because 320650465 - 2¹¹ = 320648417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 525352 + ... + 525961.

It is an arithmetic number, because the mean of its divisors is an integer number (48886101).

Almost surely, 2^320650465 is an apocalyptic number.

It is an amenable number.

320650465 is a deficient number, since it is larger than the sum of its proper divisors (70438343).

320650465 is a wasteful number, since it uses less digits than its factorization.

320650465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051379.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 320650465 is about 17906.7156396699. The cubic root of 320650465 is about 684.4535147996.

The spelling of 320650465 in words is "three hundred twenty million, six hundred fifty thousand, four hundred sixty-five".