671433912 has 48 divisors (see below), whose sum is σ = 1819807080. Its totient is φ = 223646400.

The previous prime is 671433911. The next prime is 671434087. The reversal of 671433912 is 219334176.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671433911) 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, 131487 + ... + 136497.

Almost surely, 2^671433912 is an apocalyptic number.

It is an amenable number.

671433912 is an abundant number, since it is smaller than the sum of its proper divisors (1148373168).

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

671433912 is a wasteful number, since it uses less digits than its factorization.

671433912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884 (or 6877 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 671433912 is about 25912.0418338656. The cubic root of 671433912 is about 875.6578071732.

The spelling of 671433912 in words is "six hundred seventy-one million, four hundred thirty-three thousand, nine hundred twelve".