71736487 has 2 divisors, whose sum is σ = 71736488. Its totient is φ = 71736486.

The previous prime is 71736439. The next prime is 71736491. The reversal of 71736487 is 78463717.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71736487 is a prime.

It is a super-2 number, since 2×71736487² = 10292247134202338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71736887) 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, 35868243 + 35868244.

It is an arithmetic number, because the mean of its divisors is an integer number (35868244).

Almost surely, 2^71736487 is an apocalyptic number.

71736487 is a deficient number, since it is larger than the sum of its proper divisors (1).

71736487 is an equidigital number, since it uses as much as digits as its factorization.

71736487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 43.

The square root of 71736487 is about 8469.7394883196. The cubic root of 71736487 is about 415.5086172111.

The spelling of 71736487 in words is "seventy-one million, seven hundred thirty-six thousand, four hundred eighty-seven".