678494575 has 12 divisors (see below), whose sum is σ = 917818488. Its totient is φ = 493450400.

The previous prime is 678494573. The next prime is 678494587. The reversal of 678494575 is 575494876.

It is not a de Polignac number, because 678494575 - 2¹ = 678494573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678494573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1233352 + ... + 1233901.

It is an arithmetic number, because the mean of its divisors is an integer number (76484874).

Almost surely, 2^678494575 is an apocalyptic number.

678494575 is a deficient number, since it is larger than the sum of its proper divisors (239323913).

678494575 is a wasteful number, since it uses less digits than its factorization.

678494575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467274 (or 2467269 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 55.

The square root of 678494575 is about 26047.9284205098. The cubic root of 678494575 is about 878.7165238521.

The spelling of 678494575 in words is "six hundred seventy-eight million, four hundred ninety-four thousand, five hundred seventy-five".