71007730 has 8 divisors (see below), whose sum is σ = 127813932. Its totient is φ = 28403088.

The previous prime is 71007679. The next prime is 71007737. The reversal of 71007730 is 3770017.

It can be written as a sum of positive squares in 2 ways, for example, as 70107129 + 900601 = 8373^2 + 949^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 71007695 and 71007704.

It is not an unprimeable number, because it can be changed into a prime (71007737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550377 + ... + 3550396.

Almost surely, 2^71007730 is an apocalyptic number.

71007730 is a deficient number, since it is larger than the sum of its proper divisors (56806202).

71007730 is a wasteful number, since it uses less digits than its factorization.

71007730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100780.

The product of its (nonzero) digits is 1029, while the sum is 25.

The square root of 71007730 is about 8426.6084518031. The cubic root of 71007730 is about 414.0968018717.

Adding to 71007730 its reverse (3770017), we get a palindrome (74777747).

The spelling of 71007730 in words is "seventy-one million, seven thousand, seven hundred thirty".