71671904 has 12 divisors (see below), whose sum is σ = 141104124. Its totient is φ = 35835936.

The previous prime is 71671883. The next prime is 71671909. The reversal of 71671904 is 40917617.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71671909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119842 + ... + 1119905.

It is an arithmetic number, because the mean of its divisors is an integer number (11758677).

Almost surely, 2^71671904 is an apocalyptic number.

It is an amenable number.

71671904 is a deficient number, since it is larger than the sum of its proper divisors (69432220).

71671904 is a wasteful number, since it uses less digits than its factorization.

71671904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239757 (or 2239749 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 71671904 is about 8465.9260568469. The cubic root of 71671904 is about 415.3838882615.

The spelling of 71671904 in words is "seventy-one million, six hundred seventy-one thousand, nine hundred four".