671209532 has 24 divisors (see below), whose sum is σ = 1373640576. Its totient is φ = 280970928.

The previous prime is 671209519. The next prime is 671209559. The reversal of 671209532 is 235902176.

It is a junction number, because it is equal to n+sod(n) for n = 671209492 and 671209501.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 277538 + ... + 279945.

It is an arithmetic number, because the mean of its divisors is an integer number (57235024).

Almost surely, 2^671209532 is an apocalyptic number.

It is an amenable number.

671209532 is an abundant number, since it is smaller than the sum of its proper divisors (702431044).

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

671209532 is a wasteful number, since it uses less digits than its factorization.

671209532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557537 (or 557535 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 671209532 is about 25907.7118248602. The cubic root of 671209532 is about 875.5602537700.

The spelling of 671209532 in words is "six hundred seventy-one million, two hundred nine thousand, five hundred thirty-two".