71320670 has 16 divisors (see below), whose sum is σ = 128601648. Its totient is φ = 28478400.

The previous prime is 71320637. The next prime is 71320673. The reversal of 71320670 is 7602317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71320673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77 + ... + 11943.

It is an arithmetic number, because the mean of its divisors is an integer number (8037603).

Almost surely, 2^71320670 is an apocalyptic number.

71320670 is a deficient number, since it is larger than the sum of its proper divisors (57280978).

71320670 is a wasteful number, since it uses less digits than its factorization.

71320670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12475.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 71320670 is about 8445.1566000874. The cubic root of 71320670 is about 414.7042359661.

Adding to 71320670 its reverse (7602317), we get a palindrome (78922987).

The spelling of 71320670 in words is "seventy-one million, three hundred twenty thousand, six hundred seventy".