80687772 has 96 divisors (see below), whose sum is σ = 238210560. Its totient is φ = 23379840.

The previous prime is 80687741. The next prime is 80687779. The reversal of 80687772 is 27778608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80687779) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25848 + ... + 28800.

It is an arithmetic number, because the mean of its divisors is an integer number (2481360).

Almost surely, 2^80687772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80687772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119105280).

80687772 is an abundant number, since it is smaller than the sum of its proper divisors (157522788).

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

80687772 is a wasteful number, since it uses less digits than its factorization.

80687772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000 (or 2992 counting only the distinct ones).

The product of its (nonzero) digits is 263424, while the sum is 45.

The square root of 80687772 is about 8982.6372519433. The cubic root of 80687772 is about 432.1182161042.

The spelling of 80687772 in words is "eighty million, six hundred eighty-seven thousand, seven hundred seventy-two".