678295394 has 8 divisors (see below), whose sum is σ = 1162792128. Its totient is φ = 290698020.

The previous prime is 678295367. The next prime is 678295411. The reversal of 678295394 is 493592876.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24224822 + ... + 24224849.

It is an arithmetic number, because the mean of its divisors is an integer number (145349016).

Almost surely, 2^678295394 is an apocalyptic number.

678295394 is a deficient number, since it is larger than the sum of its proper divisors (484496734).

678295394 is a wasteful number, since it uses less digits than its factorization.

678295394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48449680.

The product of its digits is 3265920, while the sum is 53.

The square root of 678295394 is about 26044.1047840005. The cubic root of 678295394 is about 878.6305291750.

The spelling of 678295394 in words is "six hundred seventy-eight million, two hundred ninety-five thousand, three hundred ninety-four".