678024249 has 16 divisors (see below), whose sum is σ = 1035719040. Its totient is φ = 386490240.

The previous prime is 678024241. The next prime is 678024299. The reversal of 678024249 is 942420876.

It is not a de Polignac number, because 678024249 - 2³ = 678024241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678024249.

It is not an unprimeable number, because it can be changed into a prime (678024241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30882 + ... + 48059.

It is an arithmetic number, because the mean of its divisors is an integer number (64732440).

Almost surely, 2^678024249 is an apocalyptic number.

It is an amenable number.

678024249 is a deficient number, since it is larger than the sum of its proper divisors (357694791).

678024249 is a wasteful number, since it uses less digits than its factorization.

678024249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79360.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 678024249 is about 26038.8987670370. The cubic root of 678024249 is about 878.5134376008.

The spelling of 678024249 in words is "six hundred seventy-eight million, twenty-four thousand, two hundred forty-nine".