1378698 has 16 divisors (see below), whose sum is σ = 2816640. Its totient is φ = 449696.

The previous prime is 1378691. The next prime is 1378703. The reversal of 1378698 is 8968731.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1378691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2163 + ... + 2726.

It is an arithmetic number, because the mean of its divisors is an integer number (176040).

2^1378698 is an apocalyptic number.

1378698 is an abundant number, since it is smaller than the sum of its proper divisors (1437942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1378698 is a wasteful number, since it uses less digits than its factorization.

1378698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4941.

The product of its digits is 72576, while the sum is 42.

The square root of 1378698 is about 1174.1797136725. The cubic root of 1378698 is about 111.2986035155.

The spelling of 1378698 in words is "one million, three hundred seventy-eight thousand, six hundred ninety-eight".