678519046 has 4 divisors (see below), whose sum is σ = 1017778572. Its totient is φ = 339259522.

The previous prime is 678519029. The next prime is 678519073. The reversal of 678519046 is 640915876.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 678518987 and 678519005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169629760 + ... + 169629763.

It is an arithmetic number, because the mean of its divisors is an integer number (254444643).

Almost surely, 2^678519046 is an apocalyptic number.

678519046 is a deficient number, since it is larger than the sum of its proper divisors (339259526).

678519046 is a wasteful number, since it uses less digits than its factorization.

678519046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339259525.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 678519046 is about 26048.3981465272. The cubic root of 678519046 is about 878.7270878342.

The spelling of 678519046 in words is "six hundred seventy-eight million, five hundred nineteen thousand, forty-six".