678203479 has 4 divisors (see below), whose sum is σ = 678258760. Its totient is φ = 678148200.

The previous prime is 678203473. The next prime is 678203489. The reversal of 678203479 is 974302876.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 678203479 - 2¹¹ = 678201431 is a prime.

It is a super-3 number, since 3×678203479³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678203473) 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 3 ways as a sum of consecutive naturals, for example, 72 + ... + 36829.

It is an arithmetic number, because the mean of its divisors is an integer number (169564690).

Almost surely, 2^678203479 is an apocalyptic number.

678203479 is a deficient number, since it is larger than the sum of its proper divisors (55281).

678203479 is a wasteful number, since it uses less digits than its factorization.

678203479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55280.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 678203479 is about 26042.3401214253. The cubic root of 678203479 is about 878.5908399905.

The spelling of 678203479 in words is "six hundred seventy-eight million, two hundred three thousand, four hundred seventy-nine".