80862861 has 4 divisors (see below), whose sum is σ = 107817152. Its totient is φ = 53908572.

The previous prime is 80862857. The next prime is 80862869. The reversal of 80862861 is 16826808.

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 not a de Polignac number, because 80862861 - 2² = 80862857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80862869) 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, 13477141 + ... + 13477146.

It is an arithmetic number, because the mean of its divisors is an integer number (26954288).

Almost surely, 2^80862861 is an apocalyptic number.

It is an amenable number.

80862861 is a deficient number, since it is larger than the sum of its proper divisors (26954291).

80862861 is a wasteful number, since it uses less digits than its factorization.

80862861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26954290.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 80862861 is about 8992.3779391216. The cubic root of 80862861 is about 432.4305496199.

The spelling of 80862861 in words is "eighty million, eight hundred sixty-two thousand, eight hundred sixty-one".