71709498 has 48 divisors (see below), whose sum is σ = 181359360. Its totient is φ = 20050848.

The previous prime is 71709493. The next prime is 71709511. The reversal of 71709498 is 89490717.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71709493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133 + ... + 11976.

It is an arithmetic number, because the mean of its divisors is an integer number (3778320).

Almost surely, 2^71709498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71709498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90679680).

71709498 is an abundant number, since it is smaller than the sum of its proper divisors (109649862).

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

71709498 is a wasteful number, since it uses less digits than its factorization.

71709498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12171 (or 12168 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 71709498 is about 8468.1460780976. The cubic root of 71709498 is about 415.4565025473.

The spelling of 71709498 in words is "seventy-one million, seven hundred nine thousand, four hundred ninety-eight".