678580123 has 6 divisors (see below), whose sum is σ = 734794044. Its totient is φ = 626381496.

The previous prime is 678580073. The next prime is 678580129. The reversal of 678580123 is 321085876.

It is not a de Polignac number, because 678580123 - 2²⁵ = 645025691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678580129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2007465 + ... + 2007802.

It is an arithmetic number, because the mean of its divisors is an integer number (122465674).

Almost surely, 2^678580123 is an apocalyptic number.

678580123 is a deficient number, since it is larger than the sum of its proper divisors (56213921).

678580123 is a wasteful number, since it uses less digits than its factorization.

678580123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015293 (or 4015280 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 678580123 is about 26049.5704954995. The cubic root of 678580123 is about 878.7534532960.

The spelling of 678580123 in words is "six hundred seventy-eight million, five hundred eighty thousand, one hundred twenty-three".