80860813 has 4 divisors (see below), whose sum is σ = 88211808. Its totient is φ = 73509820.

The previous prime is 80860811. The next prime is 80860831. The reversal of 80860813 is 31806808.

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 not a de Polignac number, because 80860813 - 2¹ = 80860811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80860811) 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, 3675481 + ... + 3675502.

It is an arithmetic number, because the mean of its divisors is an integer number (22052952).

Almost surely, 2^80860813 is an apocalyptic number.

It is an amenable number.

80860813 is a deficient number, since it is larger than the sum of its proper divisors (7350995).

80860813 is a wasteful number, since it uses less digits than its factorization.

80860813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7350994.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 80860813 is about 8992.2640641832. The cubic root of 80860813 is about 432.4268988907.

The spelling of 80860813 in words is "eighty million, eight hundred sixty thousand, eight hundred thirteen".