71707650 has 96 divisors (see below), whose sum is σ = 209891328. Its totient is φ = 15854400.

The previous prime is 71707631. The next prime is 71707661. The reversal of 71707650 is 5670717.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 31449 + ... + 33651.

It is an arithmetic number, because the mean of its divisors is an integer number (2186368).

Almost surely, 2^71707650 is an apocalyptic number.

71707650 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 71707650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104945664).

71707650 is an abundant number, since it is smaller than the sum of its proper divisors (138183678).

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

71707650 is a wasteful number, since it uses less digits than its factorization.

71707650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 2251 counting only the distinct ones).

The product of its (nonzero) digits is 10290, while the sum is 33.

The square root of 71707650 is about 8468.0369626024. The cubic root of 71707650 is about 415.4529336560.

The spelling of 71707650 in words is "seventy-one million, seven hundred seven thousand, six hundred fifty".