71575650 has 144 divisors (see below), whose sum is σ = 205549344. Its totient is φ = 18506880.

The previous prime is 71575639. The next prime is 71575657. The reversal of 71575650 is 5657517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71575657) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 522382 + ... + 522518.

It is an arithmetic number, because the mean of its divisors is an integer number (1427426).

Almost surely, 2^71575650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71575650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102774672).

71575650 is an abundant number, since it is smaller than the sum of its proper divisors (133973694).

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

71575650 is a wasteful number, since it uses less digits than its factorization.

71575650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 71575650 is about 8460.2393583161. The cubic root of 71575650 is about 415.1978540769.

It can be divided in two parts, 715756 and 50, that added together give a triangular number (715806 = T₁₁₉₆).

The spelling of 71575650 in words is "seventy-one million, five hundred seventy-five thousand, six hundred fifty".