678468405 has 16 divisors (see below), whose sum is σ = 1110795840. Its totient is φ = 353434368.

The previous prime is 678468383. The next prime is 678468407. The reversal of 678468405 is 504864876.

It is not a de Polignac number, because 678468405 - 2⁷ = 678468277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678468407) 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, 525300 + ... + 526589.

It is an arithmetic number, because the mean of its divisors is an integer number (69424740).

Almost surely, 2^678468405 is an apocalyptic number.

It is an amenable number.

678468405 is a deficient number, since it is larger than the sum of its proper divisors (432327435).

678468405 is a wasteful number, since it uses less digits than its factorization.

678468405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051940.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 678468405 is about 26047.4260724548. The cubic root of 678468405 is about 878.7052261410.

The spelling of 678468405 in words is "six hundred seventy-eight million, four hundred sixty-eight thousand, four hundred five".