678494500 has 48 divisors (see below), whose sum is σ = 1484381808. Its totient is φ = 270931200.

The previous prime is 678494483. The next prime is 678494507. The reversal of 678494500 is 5494876.

It can be written as a sum of positive squares in 8 ways, for example, as 205692964 + 472801536 = 14342^2 + 21744^2 .

It is not an unprimeable number, because it can be changed into a prime (678494507) 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, 547882 + ... + 549118.

It is an arithmetic number, because the mean of its divisors is an integer number (30924621).

Almost surely, 2^678494500 is an apocalyptic number.

It is an amenable number.

678494500 is an abundant number, since it is smaller than the sum of its proper divisors (805887308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678494500 is a wasteful number, since it uses less digits than its factorization.

678494500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353 (or 2341 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 678494500 is about 26047.9269808559. The cubic root of 678494500 is about 878.7164914747.

The spelling of 678494500 in words is "six hundred seventy-eight million, four hundred ninety-four thousand, five hundred".