71006920 has 16 divisors (see below), whose sum is σ = 159765660. Its totient is φ = 28402752.

The previous prime is 71006879. The next prime is 71006921. The reversal of 71006920 is 2960017.

It can be written as a sum of positive squares in 2 ways, for example, as 64545156 + 6461764 = 8034^2 + 2542^2 .

It is not an unprimeable number, because it can be changed into a prime (71006921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 887547 + ... + 887626.

Almost surely, 2^71006920 is an apocalyptic number.

It is an amenable number.

71006920 is an abundant number, since it is smaller than the sum of its proper divisors (88758740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71006920 is a wasteful number, since it uses less digits than its factorization.

71006920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1775184 (or 1775180 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 71006920 is about 8426.5603896252. The cubic root of 71006920 is about 414.0952273028.

Adding to 71006920 its reverse (2960017), we get a palindrome (73966937).

The spelling of 71006920 in words is "seventy-one million, six thousand, nine hundred twenty".