678323503 has 16 divisors (see below), whose sum is σ = 838857600. Its totient is φ = 539261280.

The previous prime is 678323501. The next prime is 678323509. The reversal of 678323503 is 305323876.

It is a cyclic number.

It is not a de Polignac number, because 678323503 - 2¹ = 678323501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678323501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122113 + ... + 127546.

It is an arithmetic number, because the mean of its divisors is an integer number (52428600).

Almost surely, 2^678323503 is an apocalyptic number.

678323503 is a deficient number, since it is larger than the sum of its proper divisors (160534097).

678323503 is a wasteful number, since it uses less digits than its factorization.

678323503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249702.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 678323503 is about 26044.6444206866. The cubic root of 678323503 is about 878.6426660133.

The spelling of 678323503 in words is "six hundred seventy-eight million, three hundred twenty-three thousand, five hundred three".