671705528 has 32 divisors (see below), whose sum is σ = 1357398000. Its totient is φ = 309773568.

The previous prime is 671705521. The next prime is 671705533. The reversal of 671705528 is 825507176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671705521) 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, 247523 + ... + 250221.

Almost surely, 2^671705528 is an apocalyptic number.

It is an amenable number.

671705528 is an abundant number, since it is smaller than the sum of its proper divisors (685692472).

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

671705528 is a wasteful number, since it uses less digits than its factorization.

671705528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111 (or 5107 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 41.

The square root of 671705528 is about 25917.2824192661. The cubic root of 671705528 is about 875.7758682374.

The spelling of 671705528 in words is "six hundred seventy-one million, seven hundred five thousand, five hundred twenty-eight".