671341720 has 32 divisors (see below), whose sum is σ = 1726308000. Its totient is φ = 230174208.

The previous prime is 671341717. The next prime is 671341721. The reversal of 671341720 is 27143176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671341721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1198545 + ... + 1199104.

It is an arithmetic number, because the mean of its divisors is an integer number (53947125).

Almost surely, 2^671341720 is an apocalyptic number.

It is an amenable number.

671341720 is an abundant number, since it is smaller than the sum of its proper divisors (1054966280).

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

671341720 is a wasteful number, since it uses less digits than its factorization.

671341720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397667 (or 2397663 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 671341720 is about 25910.2628315500. The cubic root of 671341720 is about 875.6177276070.

Adding to 671341720 its reverse (27143176), we get a palindrome (698484896).

The spelling of 671341720 in words is "six hundred seventy-one million, three hundred forty-one thousand, seven hundred twenty".