71665914 has 16 divisors (see below), whose sum is σ = 151763328. Its totient is φ = 22483392.

The previous prime is 71665889. The next prime is 71665921. The reversal of 71665914 is 41956617.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351202 + ... + 351405.

It is an arithmetic number, because the mean of its divisors is an integer number (9485208).

Almost surely, 2^71665914 is an apocalyptic number.

71665914 is an abundant number, since it is smaller than the sum of its proper divisors (80097414).

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

71665914 is a wasteful number, since it uses less digits than its factorization.

71665914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702629.

The product of its digits is 45360, while the sum is 39.

The square root of 71665914 is about 8465.5722783519. The cubic root of 71665914 is about 415.3723159965.

The spelling of 71665914 in words is "seventy-one million, six hundred sixty-five thousand, nine hundred fourteen".