80778060 has 144 divisors (see below), whose sum is σ = 277385472. Its totient is φ = 19569600.

The previous prime is 80778041. The next prime is 80778097. The reversal of 80778060 is 6087708.

It is a happy number.

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

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 47 ways as a sum of consecutive naturals, for example, 52705 + ... + 54215.

It is an arithmetic number, because the mean of its divisors is an integer number (1926288).

Almost surely, 2^80778060 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 80778060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138692736).

80778060 is an abundant number, since it is smaller than the sum of its proper divisors (196607412).

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

80778060 is a wasteful number, since it uses less digits than its factorization.

80778060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 80778060 is about 8987.6615423591. The cubic root of 80778060 is about 432.2793332318.

The spelling of 80778060 in words is "eighty million, seven hundred seventy-eight thousand, sixty".