3643378 has 8 divisors (see below), whose sum is σ = 5505372. Its totient is φ = 1808256.

The previous prime is 3643369. The next prime is 3643403. The reversal of 3643378 is 8733463.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3286969 + 356409 = 1813^2 + 597^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 6375 + ... + 6922.

Almost surely, 2^3643378 is an apocalyptic number.

3643378 is a deficient number, since it is larger than the sum of its proper divisors (1861994).

3643378 is a wasteful number, since it uses less digits than its factorization.

3643378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13436.

The product of its digits is 36288, while the sum is 34.

The square root of 3643378 is about 1908.7634740847. The cubic root of 3643378 is about 153.8750039869.

The spelling of 3643378 in words is "three million, six hundred forty-three thousand, three hundred seventy-eight".