678453400 has 48 divisors (see below), whose sum is σ = 1579854240. Its totient is φ = 270960000.

The previous prime is 678453367. The next prime is 678453403. The reversal of 678453400 is 4354876.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 678453400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678453403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147942 + ... + 152458.

It is an arithmetic number, because the mean of its divisors is an integer number (32913630).

Almost surely, 2^678453400 is an apocalyptic number.

It is an amenable number.

678453400 is an abundant number, since it is smaller than the sum of its proper divisors (901400840).

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

678453400 is a wasteful number, since it uses less digits than its factorization.

678453400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284 (or 5275 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 678453400 is about 26047.1380385639. The cubic root of 678453400 is about 878.6987482814.

The spelling of 678453400 in words is "six hundred seventy-eight million, four hundred fifty-three thousand, four hundred".