3688378 has 4 divisors (see below), whose sum is σ = 5532570. Its totient is φ = 1844188.

The previous prime is 3688369. The next prime is 3688393. The reversal of 3688378 is 8738863.

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

It can be written as a sum of positive squares in only one way, i.e., 1857769 + 1830609 = 1363^2 + 1353^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 922093 + ... + 922096.

Almost surely, 2^3688378 is an apocalyptic number.

3688378 is a deficient number, since it is larger than the sum of its proper divisors (1844192).

3688378 is a wasteful number, since it uses less digits than its factorization.

3688378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844191.

The product of its digits is 193536, while the sum is 43.

The square root of 3688378 is about 1920.5150350882. The cubic root of 3688378 is about 154.5059259081.

The spelling of 3688378 in words is "three million, six hundred eighty-eight thousand, three hundred seventy-eight".