71861084 has 24 divisors (see below), whose sum is σ = 129895920. Its totient is φ = 34763904.

The previous prime is 71861077. The next prime is 71861087. The reversal of 71861084 is 48016817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71861087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16832 + ... + 20664.

It is an arithmetic number, because the mean of its divisors is an integer number (5412330).

Almost surely, 2^71861084 is an apocalyptic number.

It is an amenable number.

71861084 is a deficient number, since it is larger than the sum of its proper divisors (58034836).

71861084 is a wasteful number, since it uses less digits than its factorization.

71861084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989 (or 3987 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 71861084 is about 8477.0917182723. The cubic root of 71861084 is about 415.7490396469.

The spelling of 71861084 in words is "seventy-one million, eight hundred sixty-one thousand, eighty-four".