646869324 has 12 divisors (see below), whose sum is σ = 1509361784. Its totient is φ = 215623104.

The previous prime is 646869287. The next prime is 646869403. The reversal of 646869324 is 423968646.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26952877 + ... + 26952900.

Almost surely, 2^646869324 is an apocalyptic number.

It is an amenable number.

646869324 is an abundant number, since it is smaller than the sum of its proper divisors (862492460).

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

646869324 is a wasteful number, since it uses less digits than its factorization.

646869324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53905784 (or 53905782 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 48.

The square root of 646869324 is about 25433.6258524026. The cubic root of 646869324 is about 864.8461414564.

The spelling of 646869324 in words is "six hundred forty-six million, eight hundred sixty-nine thousand, three hundred twenty-four".