71696587 has 2 divisors, whose sum is σ = 71696588. Its totient is φ = 71696586.

The previous prime is 71696561. The next prime is 71696591. The reversal of 71696587 is 78569617.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71696587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71696587.

It is not a weakly prime, because it can be changed into another prime (71690587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35848293 + 35848294.

It is an arithmetic number, because the mean of its divisors is an integer number (35848294).

Almost surely, 2^71696587 is an apocalyptic number.

71696587 is a deficient number, since it is larger than the sum of its proper divisors (1).

71696587 is an equidigital number, since it uses as much as digits as its factorization.

71696587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 49.

The square root of 71696587 is about 8467.3837163554. The cubic root of 71696587 is about 415.4315673062.

The spelling of 71696587 in words is "seventy-one million, six hundred ninety-six thousand, five hundred eighty-seven".