71662 has 4 divisors (see below), whose sum is σ = 107496. Its totient is φ = 35830.

The previous prime is 71647. The next prime is 71663. The reversal of 71662 is 26617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26617 = 43 ⋅619.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 7⁵ + 1 + 6 + 6⁶ + 2¹³ .

It is a plaindrome in base 12 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71663) 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 as a sum of consecutive naturals, namely, 17914 + ... + 17917.

It is an arithmetic number, because the mean of its divisors is an integer number (26874).

2⁷¹⁶⁶² is an apocalyptic number.

71662 is a deficient number, since it is larger than the sum of its proper divisors (35834).

71662 is a wasteful number, since it uses less digits than its factorization.

71662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35833.

The product of its digits is 504, while the sum is 22.

The square root of 71662 is about 267.6975905756. The cubic root of 71662 is about 41.5364754071.

The spelling of 71662 in words is "seventy-one thousand, six hundred sixty-two".