80196665 has 8 divisors (see below), whose sum is σ = 97088328. Its totient is φ = 63589120.

The previous prime is 80196661. The next prime is 80196679. The reversal of 80196665 is 56669108.

It can be written as a sum of positive squares in 4 ways, for example, as 3125824 + 77070841 = 1768^2 + 8779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80196665 - 2² = 80196661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80196661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70406 + ... + 71535.

It is an arithmetic number, because the mean of its divisors is an integer number (12136041).

Almost surely, 2^80196665 is an apocalyptic number.

It is an amenable number.

80196665 is a deficient number, since it is larger than the sum of its proper divisors (16891663).

80196665 is a wasteful number, since it uses less digits than its factorization.

80196665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142059.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 80196665 is about 8955.2590693960. The cubic root of 80196665 is about 431.2397339851.

The spelling of 80196665 in words is "eighty million, one hundred ninety-six thousand, six hundred sixty-five".