678315744 has 36 divisors (see below), whose sum is σ = 1928961216. Its totient is φ = 226105152.

The previous prime is 678315739. The next prime is 678315761. The reversal of 678315744 is 447513876.

678315744 is a `hidden beast` number, since 6 + 78 + 3 + 1 + 574 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×678315744² = 920224497116547072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 678315744.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1177344 + ... + 1177919.

It is an arithmetic number, because the mean of its divisors is an integer number (53582256).

Almost surely, 2^678315744 is an apocalyptic number.

It is an amenable number.

678315744 is an abundant number, since it is smaller than the sum of its proper divisors (1250645472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678315744 is a wasteful number, since it uses less digits than its factorization.

678315744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2355279 (or 2355268 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 678315744 is about 26044.4954644931. The cubic root of 678315744 is about 878.6393158839.

The spelling of 678315744 in words is "six hundred seventy-eight million, three hundred fifteen thousand, seven hundred forty-four".