678537067 has 8 divisors (see below), whose sum is σ = 732473840. Its totient is φ = 624849120.

The previous prime is 678537061. The next prime is 678537109. The reversal of 678537067 is 760735876.

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

It is a cyclic number.

It is not a de Polignac number, because 678537067 - 2³ = 678537059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 678537067.

It is not an unprimeable number, because it can be changed into a prime (678537061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56517 + ... + 67462.

It is an arithmetic number, because the mean of its divisors is an integer number (91559230).

Almost surely, 2^678537067 is an apocalyptic number.

678537067 is a deficient number, since it is larger than the sum of its proper divisors (53936773).

678537067 is a wasteful number, since it uses less digits than its factorization.

678537067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124413.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The square root of 678537067 is about 26048.7440580155. The cubic root of 678537067 is about 878.7348672280.

The spelling of 678537067 in words is "six hundred seventy-eight million, five hundred thirty-seven thousand, sixty-seven".