71237047 has 8 divisors (see below), whose sum is σ = 81469856. Its totient is φ = 61018272.

The previous prime is 71237041. The next prime is 71237053. The reversal of 71237047 is 74073217.

It is an interprime number because it is at equal distance from previous prime (71237041) and next prime (71237053).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-71237047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71237041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11893 + ... + 16849.

It is an arithmetic number, because the mean of its divisors is an integer number (10183732).

Almost surely, 2^71237047 is an apocalyptic number.

71237047 is a deficient number, since it is larger than the sum of its proper divisors (10232809).

71237047 is a wasteful number, since it uses less digits than its factorization.

71237047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7017.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 71237047 is about 8440.2042036908. The cubic root of 71237047 is about 414.5420932815.

The spelling of 71237047 in words is "seventy-one million, two hundred thirty-seven thousand, forty-seven".