71770 has 8 divisors (see below), whose sum is σ = 129204. Its totient is φ = 28704.

The previous prime is 71761. The next prime is 71777. The reversal of 71770 is 7717.

It can be written as a sum of positive squares in 2 ways, for example, as 69169 + 2601 = 263^2 + 51^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (71777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3579 + ... + 3598.

2⁷¹⁷⁷⁰ is an apocalyptic number.

71770 is a deficient number, since it is larger than the sum of its proper divisors (57434).

71770 is a wasteful number, since it uses less digits than its factorization.

71770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7184.

The product of its (nonzero) digits is 343, while the sum is 22.

The square root of 71770 is about 267.8992347880. The cubic root of 71770 is about 41.5573311265.

It can be divided in two parts, 717 and 70, that added together give a palindrome (787).

The spelling of 71770 in words is "seventy-one thousand, seven hundred seventy", and thus it is an iban number.