80966520 has 128 divisors (see below), whose sum is σ = 274536000. Its totient is φ = 21219840.

The previous prime is 80966519. The next prime is 80966531. The reversal of 80966520 is 2566908.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65266 + ... + 66494.

Almost surely, 2^80966520 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 80966520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137268000).

80966520 is an abundant number, since it is smaller than the sum of its proper divisors (193569480).

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

80966520 is a wasteful number, since it uses less digits than its factorization.

80966520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 80966520 is about 8998.1398077603. The cubic root of 80966520 is about 432.6152498948.

The spelling of 80966520 in words is "eighty million, nine hundred sixty-six thousand, five hundred twenty".