678624545 has 8 divisors (see below), whose sum is σ = 849756096. Its totient is φ = 519295216.

The previous prime is 678624533. The next prime is 678624589. The reversal of 678624545 is 545426876.

678624545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 678624545 - 2¹⁶ = 678559009 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 678624545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2950427 + ... + 2950656.

It is an arithmetic number, because the mean of its divisors is an integer number (106219512).

Almost surely, 2^678624545 is an apocalyptic number.

It is an amenable number.

678624545 is a deficient number, since it is larger than the sum of its proper divisors (171131551).

678624545 is a wasteful number, since it uses less digits than its factorization.

678624545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5901111.

The product of its digits is 1612800, while the sum is 47.

The square root of 678624545 is about 26050.4231251625. The cubic root of 678624545 is about 878.7726282039.

The spelling of 678624545 in words is "six hundred seventy-eight million, six hundred twenty-four thousand, five hundred forty-five".