80861667 has 8 divisors (see below), whose sum is σ = 110109696. Its totient is φ = 52760712.

The previous prime is 80861659. The next prime is 80861681. The reversal of 80861667 is 76616808.

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

It is not a de Polignac number, because 80861667 - 2³ = 80861659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80861617) 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, 286603 + ... + 286884.

It is an arithmetic number, because the mean of its divisors is an integer number (13763712).

Almost surely, 2^80861667 is an apocalyptic number.

80861667 is a deficient number, since it is larger than the sum of its proper divisors (29248029).

80861667 is a wasteful number, since it uses less digits than its factorization.

80861667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573537.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 80861667 is about 8992.3115493181. The cubic root of 80861667 is about 432.4284212237.

The spelling of 80861667 in words is "eighty million, eight hundred sixty-one thousand, six hundred sixty-seven".