671897268 has 60 divisors (see below), whose sum is σ = 2007403552. Its totient is φ = 191970000.

The previous prime is 671897257. The next prime is 671897311. The reversal of 671897268 is 862798176.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 145858 + ... + 150393.

Almost surely, 2^671897268 is an apocalyptic number.

It is an amenable number.

671897268 is an abundant number, since it is smaller than the sum of its proper divisors (1335506284).

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

671897268 is a wasteful number, since it uses less digits than its factorization.

671897268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296274 (or 296263 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 671897268 is about 25920.9812314272. The cubic root of 671897268 is about 875.8591911036.

The spelling of 671897268 in words is "six hundred seventy-one million, eight hundred ninety-seven thousand, two hundred sixty-eight".