2698378 has 4 divisors (see below), whose sum is σ = 4047570. Its totient is φ = 1349188.

The previous prime is 2698357. The next prime is 2698387. The reversal of 2698378 is 8738962.

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., 2140369 + 558009 = 1463^2 + 747^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674593 + ... + 674596.

2^2698378 is an apocalyptic number.

2698378 is a deficient number, since it is larger than the sum of its proper divisors (1349192).

2698378 is a wasteful number, since it uses less digits than its factorization.

2698378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349191.

The product of its digits is 145152, while the sum is 43.

The square root of 2698378 is about 1642.6740394856. The cubic root of 2698378 is about 139.2197755077.

The spelling of 2698378 in words is "two million, six hundred ninety-eight thousand, three hundred seventy-eight".