321653064 has 32 divisors (see below), whose sum is σ = 816138720. Its totient is φ = 105616896.

The previous prime is 321653051. The next prime is 321653119. The reversal of 321653064 is 460356123.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 98409 + ... + 101624.

It is an arithmetic number, because the mean of its divisors is an integer number (25504335).

Almost surely, 2^321653064 is an apocalyptic number.

It is an amenable number.

321653064 is an abundant number, since it is smaller than the sum of its proper divisors (494485656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321653064 is a wasteful number, since it uses less digits than its factorization.

321653064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200109 (or 200105 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 321653064 is about 17934.6888459209. The cubic root of 321653064 is about 685.1661479154.

It can be divided in two parts, 3216 and 53064, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 321653064 in words is "three hundred twenty-one million, six hundred fifty-three thousand, sixty-four".