80798558 has 4 divisors (see below), whose sum is σ = 121197840. Its totient is φ = 40399278.

The previous prime is 80798551. The next prime is 80798567. The reversal of 80798558 is 85589708.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80798551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20199638 + ... + 20199641.

It is an arithmetic number, because the mean of its divisors is an integer number (30299460).

Almost surely, 2^80798558 is an apocalyptic number.

80798558 is a deficient number, since it is larger than the sum of its proper divisors (40399282).

80798558 is a wasteful number, since it uses less digits than its factorization.

80798558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40399281.

The product of its (nonzero) digits is 806400, while the sum is 50.

The square root of 80798558 is about 8988.8018111426. The cubic root of 80798558 is about 432.3158947782.

The spelling of 80798558 in words is "eighty million, seven hundred ninety-eight thousand, five hundred fifty-eight".