80612851 has 4 divisors (see below), whose sum is σ = 87941304. Its totient is φ = 73284400.

The previous prime is 80612747. The next prime is 80612867. The reversal of 80612851 is 15821608.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80612851 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (80612891) 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, 3664210 + ... + 3664231.

It is an arithmetic number, because the mean of its divisors is an integer number (21985326).

Almost surely, 2^80612851 is an apocalyptic number.

80612851 is a deficient number, since it is larger than the sum of its proper divisors (7328453).

80612851 is a wasteful number, since it uses less digits than its factorization.

80612851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7328452.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 80612851 is about 8978.4659602852. The cubic root of 80612851 is about 431.9844298086.

The spelling of 80612851 in words is "eighty million, six hundred twelve thousand, eight hundred fifty-one".