678520801 has 32 divisors (see below), whose sum is σ = 821145600. Its totient is φ = 548439360.

The previous prime is 678520793. The next prime is 678520807. The reversal of 678520801 is 108025876.

678520801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 678520801 - 2³ = 678520793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (678520807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2579796 + ... + 2580058.

It is an arithmetic number, because the mean of its divisors is an integer number (25660800).

Almost surely, 2^678520801 is an apocalyptic number.

It is an amenable number.

678520801 is a deficient number, since it is larger than the sum of its proper divisors (142624799).

678520801 is a wasteful number, since it uses less digits than its factorization.

678520801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 678520801 is about 26048.4318337976. The cubic root of 678520801 is about 878.7278454472.

The spelling of 678520801 in words is "six hundred seventy-eight million, five hundred twenty thousand, eight hundred one".