71630347 has 2 divisors, whose sum is σ = 71630348. Its totient is φ = 71630346.

The previous prime is 71630309. The next prime is 71630353. The reversal of 71630347 is 74303617.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71630347 - 2⁷ = 71630219 is a prime.

It is a super-2 number, since 2×71630347² = 10261813222680818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71630357) 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 as a sum of consecutive naturals, namely, 35815173 + 35815174.

It is an arithmetic number, because the mean of its divisors is an integer number (35815174).

Almost surely, 2^71630347 is an apocalyptic number.

71630347 is a deficient number, since it is larger than the sum of its proper divisors (1).

71630347 is an equidigital number, since it uses as much as digits as its factorization.

71630347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 71630347 is about 8463.4713327334. The cubic root of 71630347 is about 415.3035897314.

The spelling of 71630347 in words is "seventy-one million, six hundred thirty thousand, three hundred forty-seven".