80681532 has 12 divisors (see below), whose sum is σ = 188256936. Its totient is φ = 26893840.

The previous prime is 80681519. The next prime is 80681533. The reversal of 80681532 is 23518608.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 80681493 and 80681502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80681533) 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, 3361719 + ... + 3361742.

It is an arithmetic number, because the mean of its divisors is an integer number (15688078).

Almost surely, 2^80681532 is an apocalyptic number.

It is an amenable number.

80681532 is an abundant number, since it is smaller than the sum of its proper divisors (107575404).

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

80681532 is a wasteful number, since it uses less digits than its factorization.

80681532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6723468 (or 6723466 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 80681532 is about 8982.2899084810. The cubic root of 80681532 is about 432.1070765097.

The spelling of 80681532 in words is "eighty million, six hundred eighty-one thousand, five hundred thirty-two".