678403061 has 16 divisors (see below), whose sum is σ = 803088000. Its totient is φ = 560712768.

The previous prime is 678403057. The next prime is 678403069. The reversal of 678403061 is 160304876.

It is not a de Polignac number, because 678403061 - 2² = 678403057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678403069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203990 + ... + 207288.

It is an arithmetic number, because the mean of its divisors is an integer number (50193000).

Almost surely, 2^678403061 is an apocalyptic number.

It is an amenable number.

678403061 is a deficient number, since it is larger than the sum of its proper divisors (124684939).

678403061 is a wasteful number, since it uses less digits than its factorization.

678403061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 678403061 is about 26046.1717148605. The cubic root of 678403061 is about 878.6770155629.

The spelling of 678403061 in words is "six hundred seventy-eight million, four hundred three thousand, sixty-one".