678754452 has 12 divisors (see below), whose sum is σ = 1583760416. Its totient is φ = 226251480.

The previous prime is 678754409. The next prime is 678754463. The reversal of 678754452 is 254457876.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×678754452² = 921415212219640608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28281424 + ... + 28281447.

Almost surely, 2^678754452 is an apocalyptic number.

It is an amenable number.

678754452 is an abundant number, since it is smaller than the sum of its proper divisors (905005964).

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

678754452 is a wasteful number, since it uses less digits than its factorization.

678754452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56562878 (or 56562876 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 48.

The square root of 678754452 is about 26052.9163818564. The cubic root of 678754452 is about 878.8286982027.

It can be divided in two parts, 67875 and 4452, that added together give a palindrome (72327).

The spelling of 678754452 in words is "six hundred seventy-eight million, seven hundred fifty-four thousand, four hundred fifty-two".