80879705 has 8 divisors (see below), whose sum is σ = 97154304. Its totient is φ = 64638000.

The previous prime is 80879671. The next prime is 80879719. The reversal of 80879705 is 50797808.

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

It is not a de Polignac number, because 80879705 - 2⁶ = 80879641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2441 + ... + 12950.

It is an arithmetic number, because the mean of its divisors is an integer number (12144288).

Almost surely, 2^80879705 is an apocalyptic number.

It is an amenable number.

80879705 is a deficient number, since it is larger than the sum of its proper divisors (16274599).

80879705 is a wasteful number, since it uses less digits than its factorization.

80879705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16447.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 80879705 is about 8993.3144613096. The cubic root of 80879705 is about 432.4605731041.

The spelling of 80879705 in words is "eighty million, eight hundred seventy-nine thousand, seven hundred five".