80695913 has 4 divisors (see below), whose sum is σ = 82664148. Its totient is φ = 78727680.

The previous prime is 80695897. The next prime is 80695919. The reversal of 80695913 is 31959608.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13897984 + 66797929 = 3728^2 + 8173^2 .

It is a cyclic number.

It is not a de Polignac number, because 80695913 - 2⁴ = 80695897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1968193 = 80695913 / (8 + 0 + 6 + 9 + 5 + 9 + 1 + 3).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80695919) 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, 984056 + ... + 984137.

It is an arithmetic number, because the mean of its divisors is an integer number (20666037).

Almost surely, 2^80695913 is an apocalyptic number.

It is an amenable number.

80695913 is a deficient number, since it is larger than the sum of its proper divisors (1968235).

80695913 is a wasteful number, since it uses less digits than its factorization.

80695913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968234.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 80695913 is about 8983.0903925097. The cubic root of 80695913 is about 432.1327484842.

The spelling of 80695913 in words is "eighty million, six hundred ninety-five thousand, nine hundred thirteen".