80699698 has 4 divisors (see below), whose sum is σ = 121049550. Its totient is φ = 40349848.

The previous prime is 80699687. The next prime is 80699711. The reversal of 80699698 is 89699608.

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., 73393489 + 7306209 = 8567^2 + 2703^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20174923 + ... + 20174926.

Almost surely, 2^80699698 is an apocalyptic number.

80699698 is a deficient number, since it is larger than the sum of its proper divisors (40349852).

80699698 is a wasteful number, since it uses less digits than its factorization.

80699698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40349851.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The square root of 80699698 is about 8983.3010636402. The cubic root of 80699698 is about 432.1395046995.

The spelling of 80699698 in words is "eighty million, six hundred ninety-nine thousand, six hundred ninety-eight".