321693364 has 18 divisors (see below), whose sum is σ = 588508130. Its totient is φ = 153852336.

The previous prime is 321693301. The next prime is 321693367. The reversal of 321693364 is 463396123.

It can be written as a sum of positive squares in only one way, i.e., 289680400 + 32012964 = 17020^2 + 5658^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321693367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73899 + ... + 78130.

Almost surely, 2^321693364 is an apocalyptic number.

It is an amenable number.

321693364 is a deficient number, since it is larger than the sum of its proper divisors (266814766).

321693364 is a wasteful number, since it uses less digits than its factorization.

321693364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152079 (or 152054 counting only the distinct ones).

The product of its digits is 69984, while the sum is 37.

The square root of 321693364 is about 17935.8123317568. The cubic root of 321693364 is about 685.1947616049.

It can be divided in two parts, 3216 and 93364, that added together give a triangular number (96580 = T₄₃₉).

The spelling of 321693364 in words is "three hundred twenty-one million, six hundred ninety-three thousand, three hundred sixty-four".