689378 has 8 divisors (see below), whose sum is σ = 1067520. Its totient is φ = 333540.

The previous prime is 689369. The next prime is 689383. The reversal of 689378 is 873986.

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

It is an unprimeable number.

689378 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5498 + ... + 5621.

It is an arithmetic number, because the mean of its divisors is an integer number (133440).

2⁶⁸⁹³⁷⁸ is an apocalyptic number.

689378 is a deficient number, since it is larger than the sum of its proper divisors (378142).

689378 is a wasteful number, since it uses less digits than its factorization.

689378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11152.

The product of its digits is 72576, while the sum is 41.

The square root of 689378 is about 830.2879018750. The cubic root of 689378 is about 88.3389988851.

The spelling of 689378 in words is "six hundred eighty-nine thousand, three hundred seventy-eight".