71866416 has 40 divisors (see below), whose sum is σ = 189977920. Its totient is φ = 23397696.

The previous prime is 71866409. The next prime is 71866423. The reversal of 71866416 is 61466817.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71866409) and next prime (71866423).

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, 15346 + ... + 19473.

It is an arithmetic number, because the mean of its divisors is an integer number (4749448).

Almost surely, 2^71866416 is an apocalyptic number.

It is an amenable number.

71866416 is an abundant number, since it is smaller than the sum of its proper divisors (118111504).

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

71866416 is a wasteful number, since it uses less digits than its factorization.

71866416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34873 (or 34867 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 71866416 is about 8477.4062070895. The cubic root of 71866416 is about 415.7593220739.

The spelling of 71866416 in words is "seventy-one million, eight hundred sixty-six thousand, four hundred sixteen".