3405678 has 32 divisors (see below), whose sum is σ = 7291296. Its totient is φ = 1056768.

The previous prime is 3405671. The next prime is 3405697. The reversal of 3405678 is 8765043.

3405678 is nontrivially palindromic in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405671) 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, 17550 + ... + 17742.

It is an arithmetic number, because the mean of its divisors is an integer number (227853).

Almost surely, 2^3405678 is an apocalyptic number.

3405678 is an abundant number, since it is smaller than the sum of its proper divisors (3885618).

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

3405678 is a wasteful number, since it uses less digits than its factorization.

3405678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 3405678 is about 1845.4479131094. The cubic root of 3405678 is about 150.4531187334.

The spelling of 3405678 in words is "three million, four hundred five thousand, six hundred seventy-eight".