3698378 has 4 divisors (see below), whose sum is σ = 5547570. Its totient is φ = 1849188.

The previous prime is 3698371. The next prime is 3698389. The reversal of 3698378 is 8738963.

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., 3659569 + 38809 = 1913^2 + 197^2 .

It is not an unprimeable number, because it can be changed into a prime (3698371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 924593 + ... + 924596.

Almost surely, 2^3698378 is an apocalyptic number.

3698378 is a deficient number, since it is larger than the sum of its proper divisors (1849192).

3698378 is a wasteful number, since it uses less digits than its factorization.

3698378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849191.

The product of its digits is 217728, while the sum is 44.

The square root of 3698378 is about 1923.1167411262. The cubic root of 3698378 is about 154.6454330327.

The spelling of 3698378 in words is "three million, six hundred ninety-eight thousand, three hundred seventy-eight".