80680478 has 4 divisors (see below), whose sum is σ = 121020720. Its totient is φ = 40340238.

The previous prime is 80680463. The next prime is 80680499. The reversal of 80680478 is 87408608.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20170118 + ... + 20170121.

It is an arithmetic number, because the mean of its divisors is an integer number (30255180).

Almost surely, 2^80680478 is an apocalyptic number.

80680478 is a deficient number, since it is larger than the sum of its proper divisors (40340242).

80680478 is a wasteful number, since it uses less digits than its factorization.

80680478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40340241.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 80680478 is about 8982.2312372817. The cubic root of 80680478 is about 432.1051948612.

The spelling of 80680478 in words is "eighty million, six hundred eighty thousand, four hundred seventy-eight".