80642960 has 20 divisors (see below), whose sum is σ = 187495068. Its totient is φ = 32257152.

The previous prime is 80642957. The next prime is 80642977. The reversal of 80642960 is 6924608.

It can be written as a sum of positive squares in 2 ways, for example, as 19678096 + 60964864 = 4436^2 + 7808^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×80642960³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80642960.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503939 + ... + 504098.

Almost surely, 2^80642960 is an apocalyptic number.

80642960 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80642960 is an abundant number, since it is smaller than the sum of its proper divisors (106852108).

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

80642960 is a wasteful number, since it uses less digits than its factorization.

80642960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008050 (or 1008044 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 80642960 is about 8980.1425378443. The cubic root of 80642960 is about 432.0382053545.

The spelling of 80642960 in words is "eighty million, six hundred forty-two thousand, nine hundred sixty".