678693722 has 8 divisors (see below), whose sum is σ = 1163474976. Its totient is φ = 290868732.

The previous prime is 678693721. The next prime is 678693731. The reversal of 678693722 is 227396876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (678693721) 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, 24239048 + ... + 24239075.

It is an arithmetic number, because the mean of its divisors is an integer number (145434372).

Almost surely, 2^678693722 is an apocalyptic number.

678693722 is a deficient number, since it is larger than the sum of its proper divisors (484781254).

678693722 is a wasteful number, since it uses less digits than its factorization.

678693722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48478132.

The product of its digits is 1524096, while the sum is 50.

The square root of 678693722 is about 26051.7508432735. The cubic root of 678693722 is about 878.8024870260.

The spelling of 678693722 in words is "six hundred seventy-eight million, six hundred ninety-three thousand, seven hundred twenty-two".