80867664 has 60 divisors (see below), whose sum is σ = 227896500. Its totient is φ = 26767872.

The previous prime is 80867663. The next prime is 80867687. The reversal of 80867664 is 46676808.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37307664 + 43560000 = 6108^2 + 6600^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80867663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19572 + ... + 23340.

It is an arithmetic number, because the mean of its divisors is an integer number (3798275).

Almost surely, 2^80867664 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 80867664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113948250).

80867664 is an abundant number, since it is smaller than the sum of its proper divisors (147028836).

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

80867664 is a wasteful number, since it uses less digits than its factorization.

80867664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932 (or 3923 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 80867664 is about 8992.6449946609. The cubic root of 80867664 is about 432.4391111226.

The spelling of 80867664 in words is "eighty million, eight hundred sixty-seven thousand, six hundred sixty-four".