80857623 has 16 divisors (see below), whose sum is σ = 134413056. Its totient is φ = 42003840.

The previous prime is 80857613. The next prime is 80857643. The reversal of 80857623 is 32675808.

It is not a de Polignac number, because 80857623 - 2⁴ = 80857607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80857613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174786 + ... + 175247.

It is an arithmetic number, because the mean of its divisors is an integer number (8400816).

Almost surely, 2^80857623 is an apocalyptic number.

80857623 is a deficient number, since it is larger than the sum of its proper divisors (53555433).

80857623 is a wasteful number, since it uses less digits than its factorization.

80857623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350054.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 80857623 is about 8992.0866877494. The cubic root of 80857623 is about 432.4212123292.

The spelling of 80857623 in words is "eighty million, eight hundred fifty-seven thousand, six hundred twenty-three".