80871612 has 12 divisors (see below), whose sum is σ = 188700456. Its totient is φ = 26957200.

The previous prime is 80871559. The next prime is 80871617. The reversal of 80871612 is 21617808.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80871617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369639 + ... + 3369662.

It is an arithmetic number, because the mean of its divisors is an integer number (15725038).

Almost surely, 2^80871612 is an apocalyptic number.

It is an amenable number.

80871612 is an abundant number, since it is smaller than the sum of its proper divisors (107828844).

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

80871612 is a wasteful number, since it uses less digits than its factorization.

80871612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739308 (or 6739306 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 80871612 is about 8992.8645047059. The cubic root of 80871612 is about 432.4461483064.

The spelling of 80871612 in words is "eighty million, eight hundred seventy-one thousand, six hundred twelve".