80699197 has 4 divisors (see below), whose sum is σ = 82067040. Its totient is φ = 79331356.

The previous prime is 80699191. The next prime is 80699207. The reversal of 80699197 is 79199608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80699197 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80699197.

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 in 3 ways as a sum of consecutive naturals, for example, 683833 + ... + 683950.

It is an arithmetic number, because the mean of its divisors is an integer number (20516760).

Almost surely, 2^80699197 is an apocalyptic number.

It is an amenable number.

80699197 is a deficient number, since it is larger than the sum of its proper divisors (1367843).

80699197 is a wasteful number, since it uses less digits than its factorization.

80699197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367842.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 80699197 is about 8983.2731785246. The cubic root of 80699197 is about 432.1386104279.

The spelling of 80699197 in words is "eighty million, six hundred ninety-nine thousand, one hundred ninety-seven".