671035720 has 16 divisors (see below), whose sum is σ = 1509830460. Its totient is φ = 268414272.

The previous prime is 671035709. The next prime is 671035721. The reversal of 671035720 is 27530176.

It can be written as a sum of positive squares in 2 ways, for example, as 608214244 + 62821476 = 24662^2 + 7926^2 .

It is not an unprimeable number, because it can be changed into a prime (671035721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8387907 + ... + 8387986.

Almost surely, 2^671035720 is an apocalyptic number.

It is an amenable number.

671035720 is an abundant number, since it is smaller than the sum of its proper divisors (838794740).

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

671035720 is a wasteful number, since it uses less digits than its factorization.

671035720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16775904 (or 16775900 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 671035720 is about 25904.3571624544. The cubic root of 671035720 is about 875.4846708064.

Adding to 671035720 its reverse (27530176), we get a palindrome (698565896).

The spelling of 671035720 in words is "six hundred seventy-one million, thirty-five thousand, seven hundred twenty".