671353556 has 12 divisors (see below), whose sum is σ = 1194129300. Its totient is φ = 330173760.

The previous prime is 671353549. The next prime is 671353559. The reversal of 671353556 is 655353176.

It can be written as a sum of positive squares in 2 ways, for example, as 79210000 + 592143556 = 8900^2 + 24334^2 .

It is a super-3 number, since 3×671353556³ (a number of 27 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671353559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375481 + ... + 1375968.

It is an arithmetic number, because the mean of its divisors is an integer number (99510775).

Almost surely, 2^671353556 is an apocalyptic number.

It is an amenable number.

671353556 is a deficient number, since it is larger than the sum of its proper divisors (522775744).

671353556 is a wasteful number, since it uses less digits than its factorization.

671353556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751514 (or 2751512 counting only the distinct ones).

The product of its digits is 283500, while the sum is 41.

The square root of 671353556 is about 25910.4912342472. The cubic root of 671353556 is about 875.6228733970.

The spelling of 671353556 in words is "six hundred seventy-one million, three hundred fifty-three thousand, five hundred fifty-six".