671552 has 28 divisors (see below), whose sum is σ = 1524000. Its totient is φ = 287616.

The previous prime is 671537. The next prime is 671557. The reversal of 671552 is 255176.

It is a tau number, because it is divible by the number of its divisors (28).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671557) by changing a digit.

671552 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302 + ... + 1197.

2⁶⁷¹⁵⁵² is an apocalyptic number.

It is an amenable number.

671552 is an abundant number, since it is smaller than the sum of its proper divisors (852448).

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

671552 is a wasteful number, since it uses less digits than its factorization.

671552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518 (or 1508 counting only the distinct ones).

The product of its digits is 2100, while the sum is 26.

The square root of 671552 is about 819.4827636992. The cubic root of 671552 is about 87.5709139412.

The spelling of 671552 in words is "six hundred seventy-one thousand, five hundred fifty-two".