679711378 has 4 divisors (see below), whose sum is σ = 1019567070. Its totient is φ = 339855688.

The previous prime is 679711369. The next prime is 679711393. The reversal of 679711378 is 873117976.

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

It can be written as a sum of positive squares in only one way, i.e., 606489129 + 73222249 = 24627^2 + 8557^2 .

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, 169927843 + ... + 169927846.

Almost surely, 2^679711378 is an apocalyptic number.

679711378 is a deficient number, since it is larger than the sum of its proper divisors (339855692).

679711378 is a wasteful number, since it uses less digits than its factorization.

679711378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339855691.

The product of its digits is 444528, while the sum is 49.

The square root of 679711378 is about 26071.2749592343. The cubic root of 679711378 is about 879.2415029259.

The spelling of 679711378 in words is "six hundred seventy-nine million, seven hundred eleven thousand, three hundred seventy-eight".