3678406 has 4 divisors (see below), whose sum is σ = 5517612. Its totient is φ = 1839202.

The previous prime is 3678391. The next prime is 3678407. The reversal of 3678406 is 6048763.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3678407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919600 + ... + 919603.

It is an arithmetic number, because the mean of its divisors is an integer number (1379403).

Almost surely, 2^3678406 is an apocalyptic number.

3678406 is a deficient number, since it is larger than the sum of its proper divisors (1839206).

3678406 is a wasteful number, since it uses less digits than its factorization.

3678406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1839205.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 3678406 is about 1917.9170993554. The cubic root of 3678406 is about 154.3665580789.

The spelling of 3678406 in words is "three million, six hundred seventy-eight thousand, four hundred six".