71709435 has 32 divisors (see below), whose sum is σ = 145697280. Its totient is φ = 32781024.

The previous prime is 71709419. The next prime is 71709437. The reversal of 71709435 is 53490717.

It is a happy number.

It is not a de Polignac number, because 71709435 - 2⁴ = 71709419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71709435.

It is not an unprimeable number, because it can be changed into a prime (71709437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36997 + ... + 38886.

It is an arithmetic number, because the mean of its divisors is an integer number (4553040).

Almost surely, 2^71709435 is an apocalyptic number.

71709435 is an abundant number, since it is smaller than the sum of its proper divisors (73987845).

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

71709435 is a wasteful number, since it uses less digits than its factorization.

71709435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75904 (or 75898 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 71709435 is about 8468.1423582743. The cubic root of 71709435 is about 415.4563808815.

The spelling of 71709435 in words is "seventy-one million, seven hundred nine thousand, four hundred thirty-five".