80578 has 4 divisors (see below), whose sum is σ = 120870. Its totient is φ = 40288.

The previous prime is 80567. The next prime is 80599. The reversal of 80578 is 87508.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47089 + 33489 = 217^2 + 183^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20143 + ... + 20146.

2⁸⁰⁵⁷⁸ is an apocalyptic number.

80578 is a deficient number, since it is larger than the sum of its proper divisors (40292).

80578 is a wasteful number, since it uses less digits than its factorization.

80578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40291.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 80578 is about 283.8626428398. The cubic root of 80578 is about 43.1922168191.

The spelling of 80578 in words is "eighty thousand, five hundred seventy-eight".