71570070 has 192 divisors, whose sum is σ = 224550144. Its totient is φ = 15586560.

The previous prime is 71570069. The next prime is 71570101. The reversal of 71570070 is 7007517.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 862249 + ... + 862331.

It is an arithmetic number, because the mean of its divisors is an integer number (1169532).

Almost surely, 2^71570070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71570070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112275072).

71570070 is an abundant number, since it is smaller than the sum of its proper divisors (152980074).

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

71570070 is a wasteful number, since it uses less digits than its factorization.

71570070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 1715, while the sum is 27.

The square root of 71570070 is about 8459.9095739848. The cubic root of 71570070 is about 415.1870642611.

Adding to 71570070 its reverse (7007517), we get a palindrome (78577587).

The spelling of 71570070 in words is "seventy-one million, five hundred seventy thousand, seventy".