71705061 has 16 divisors (see below), whose sum is σ = 107577600. Its totient is φ = 47196864.

The previous prime is 71705059. The next prime is 71705063. The reversal of 71705061 is 16050717.

It is an interprime number because it is at equal distance from previous prime (71705059) and next prime (71705063).

It is not a de Polignac number, because 71705061 - 2¹ = 71705059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71705063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14676 + ... + 18941.

It is an arithmetic number, because the mean of its divisors is an integer number (6723600).

Almost surely, 2^71705061 is an apocalyptic number.

It is an amenable number.

71705061 is a deficient number, since it is larger than the sum of its proper divisors (35872539).

71705061 is a wasteful number, since it uses less digits than its factorization.

71705061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33705 (or 33699 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 71705061 is about 8467.8840922630. The cubic root of 71705061 is about 415.4479336288.

Adding to 71705061 its reverse (16050717), we get a palindrome (87755778).

The spelling of 71705061 in words is "seventy-one million, seven hundred five thousand, sixty-one".