671506012 has 24 divisors (see below), whose sum is σ = 1184377040. Its totient is φ = 333123840.

The previous prime is 671505983. The next prime is 671506013. The reversal of 671506012 is 210605176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671506013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294814 + ... + 297082.

Almost surely, 2^671506012 is an apocalyptic number.

It is an amenable number.

671506012 is a deficient number, since it is larger than the sum of its proper divisors (512871028).

671506012 is a wasteful number, since it uses less digits than its factorization.

671506012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 671506012 is about 25913.4330415713. The cubic root of 671506012 is about 875.6891493833.

The spelling of 671506012 in words is "six hundred seventy-one million, five hundred six thousand, twelve".