80857407 has 8 divisors (see below), whose sum is σ = 113484160. Its totient is φ = 51067800.

The previous prime is 80857379. The next prime is 80857411. The reversal of 80857407 is 70475808.

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

It is not a de Polignac number, because 80857407 - 2⁷ = 80857279 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 (80857417) 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, 709219 + ... + 709332.

It is an arithmetic number, because the mean of its divisors is an integer number (14185520).

Almost surely, 2^80857407 is an apocalyptic number.

80857407 is a deficient number, since it is larger than the sum of its proper divisors (32626753).

80857407 is a wasteful number, since it uses less digits than its factorization.

80857407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418573.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 80857407 is about 8992.0746771810. The cubic root of 80857407 is about 432.4208272776.

The spelling of 80857407 in words is "eighty million, eight hundred fifty-seven thousand, four hundred seven".