71098947 has 12 divisors (see below), whose sum is σ = 108739800. Its totient is φ = 44611008.

The previous prime is 71098933. The next prime is 71098949. The reversal of 71098947 is 74989017.

It is not a de Polignac number, because 71098947 - 2¹² = 71094851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71098949) 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, 232197 + ... + 232502.

It is an arithmetic number, because the mean of its divisors is an integer number (9061650).

Almost surely, 2^71098947 is an apocalyptic number.

71098947 is a deficient number, since it is larger than the sum of its proper divisors (37640853).

71098947 is a wasteful number, since it uses less digits than its factorization.

71098947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464722 (or 464719 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 71098947 is about 8432.0191532041. The cubic root of 71098947 is about 414.2740431625.

The spelling of 71098947 in words is "seventy-one million, ninety-eight thousand, nine hundred forty-seven".