671685324 has 24 divisors (see below), whose sum is σ = 1596838320. Its totient is φ = 219670464.

The previous prime is 671685293. The next prime is 671685349. The reversal of 671685324 is 423586176.

It is a super-2 number, since 2×671685324² = 902322348953969952, which contains 22 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 in 7 ways as a sum of consecutive naturals, for example, 527419 + ... + 528690.

It is an arithmetic number, because the mean of its divisors is an integer number (66534930).

Almost surely, 2^671685324 is an apocalyptic number.

It is an amenable number.

671685324 is an abundant number, since it is smaller than the sum of its proper divisors (925152996).

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

671685324 is a wasteful number, since it uses less digits than its factorization.

671685324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056169 (or 1056167 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 671685324 is about 25916.8926378144. The cubic root of 671685324 is about 875.7670874288.

The spelling of 671685324 in words is "six hundred seventy-one million, six hundred eighty-five thousand, three hundred twenty-four".