80875778 has 8 divisors (see below), whose sum is σ = 121372668. Its totient is φ = 40418224.

The previous prime is 80875777. The next prime is 80875811. The reversal of 80875778 is 87757808.

It can be written as a sum of positive squares in 2 ways, for example, as 70845889 + 10029889 = 8417^2 + 3167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (80875777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4001 + ... + 13332.

Almost surely, 2^80875778 is an apocalyptic number.

80875778 is a deficient number, since it is larger than the sum of its proper divisors (40496890).

80875778 is a wasteful number, since it uses less digits than its factorization.

80875778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19668.

The product of its (nonzero) digits is 878080, while the sum is 50.

The square root of 80875778 is about 8993.0961298098. The cubic root of 80875778 is about 432.4535738198.

The spelling of 80875778 in words is "eighty million, eight hundred seventy-five thousand, seven hundred seventy-eight".