71198047 has 2 divisors, whose sum is σ = 71198048. Its totient is φ = 71198046.

The previous prime is 71198033. The next prime is 71198051. The reversal of 71198047 is 74089117.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71198047 is a prime.

It is a super-2 number, since 2×71198047² = 10138323793228418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71197997 and 71198015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71198077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35599023 + 35599024.

It is an arithmetic number, because the mean of its divisors is an integer number (35599024).

Almost surely, 2^71198047 is an apocalyptic number.

71198047 is a deficient number, since it is larger than the sum of its proper divisors (1).

71198047 is an equidigital number, since it uses as much as digits as its factorization.

71198047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 71198047 is about 8437.8935167493. The cubic root of 71198047 is about 414.4664299689.

The spelling of 71198047 in words is "seventy-one million, one hundred ninety-eight thousand, forty-seven".