80699198 has 4 divisors (see below), whose sum is σ = 121048800. Its totient is φ = 40349598.

The previous prime is 80699191. The next prime is 80699207. The reversal of 80699198 is 89199608.

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 (80699191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20174798 + ... + 20174801.

It is an arithmetic number, because the mean of its divisors is an integer number (30262200).

Almost surely, 2^80699198 is an apocalyptic number.

80699198 is a deficient number, since it is larger than the sum of its proper divisors (40349602).

80699198 is a wasteful number, since it uses less digits than its factorization.

80699198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40349601.

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 80699198 is about 8983.2732341836. The cubic root of 80699198 is about 432.1386122129.

The spelling of 80699198 in words is "eighty million, six hundred ninety-nine thousand, one hundred ninety-eight".