320064685 has 16 divisors (see below), whose sum is σ = 387628416. Its totient is φ = 253695808.

The previous prime is 320064673. The next prime is 320064697. The reversal of 320064685 is 586460023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320064673) and next prime (320064697).

It is a cyclic number.

It is not a de Polignac number, because 320064685 - 2¹⁵ = 320031917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320064685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489819 + ... + 490471.

It is an arithmetic number, because the mean of its divisors is an integer number (24226776).

Almost surely, 2^320064685 is an apocalyptic number.

It is an amenable number.

320064685 is a deficient number, since it is larger than the sum of its proper divisors (67563731).

320064685 is a wasteful number, since it uses less digits than its factorization.

320064685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 320064685 is about 17890.3517293540. The cubic root of 320064685 is about 684.0364629799.

The spelling of 320064685 in words is "three hundred twenty million, sixty-four thousand, six hundred eighty-five".