678513201 has 4 divisors (see below), whose sum is σ = 904684272. Its totient is φ = 452342132.

The previous prime is 678513193. The next prime is 678513217. The reversal of 678513201 is 102315876.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 678513201 - 2³ = 678513193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (678513281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113085531 + ... + 113085536.

It is an arithmetic number, because the mean of its divisors is an integer number (226171068).

Almost surely, 2^678513201 is an apocalyptic number.

It is an amenable number.

678513201 is a deficient number, since it is larger than the sum of its proper divisors (226171071).

678513201 is a wasteful number, since it uses less digits than its factorization.

678513201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226171070.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 678513201 is about 26048.2859512867. The cubic root of 678513201 is about 878.7245646062.

The spelling of 678513201 in words is "six hundred seventy-eight million, five hundred thirteen thousand, two hundred one".