646385932 has 6 divisors (see below), whose sum is σ = 1131175388. Its totient is φ = 323192964.

The previous prime is 646385921. The next prime is 646385941. The reversal of 646385932 is 239583646.

It is a happy number.

It is a super-3 number, since 3×646385932³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80798238 + ... + 80798245.

Almost surely, 2^646385932 is an apocalyptic number.

It is an amenable number.

646385932 is a deficient number, since it is larger than the sum of its proper divisors (484789456).

646385932 is a wasteful number, since it uses less digits than its factorization.

646385932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161596487 (or 161596485 counting only the distinct ones).

The product of its digits is 933120, while the sum is 46.

The square root of 646385932 is about 25424.1210664204. The cubic root of 646385932 is about 864.6306605911.

The spelling of 646385932 in words is "six hundred forty-six million, three hundred eighty-five thousand, nine hundred thirty-two".