671280253 has 12 divisors (see below), whose sum is σ = 784589952. Its totient is φ = 572647320.

The previous prime is 671280227. The next prime is 671280271. The reversal of 671280253 is 352082176.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-671280253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671280283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22125 + ... + 42802.

It is an arithmetic number, because the mean of its divisors is an integer number (65382496).

Almost surely, 2^671280253 is an apocalyptic number.

It is an amenable number.

671280253 is a deficient number, since it is larger than the sum of its proper divisors (113309699).

671280253 is a wasteful number, since it uses less digits than its factorization.

671280253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65152 (or 65145 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 671280253 is about 25909.0766527871. The cubic root of 671280253 is about 875.5910033939.

The spelling of 671280253 in words is "six hundred seventy-one million, two hundred eighty thousand, two hundred fifty-three".