71071000 has 256 divisors, whose sum is σ = 226437120. Its totient is φ = 20160000.

The previous prime is 71070977. The next prime is 71071031. The reversal of 71071000 is 17017.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1000965 + ... + 1001035.

It is an arithmetic number, because the mean of its divisors is an integer number (884520).

Almost surely, 2^71071000 is an apocalyptic number.

71071000 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71071000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113218560).

71071000 is an abundant number, since it is smaller than the sum of its proper divisors (155366120).

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

71071000 is a wasteful number, since it uses less digits than its factorization.

71071000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 49, while the sum is 16.

The square root of 71071000 is about 8430.3617953205. The cubic root of 71071000 is about 414.2197562171.

Adding to 71071000 its reverse (17017), we get a palindrome (71088017).

It can be divided in two parts, 710 and 71000, that multiplied together give a square (50410000 = 7100²).

The spelling of 71071000 in words is "seventy-one million, seventy-one thousand".