617398 has 8 divisors (see below), whose sum is σ = 931392. Its totient is φ = 306936.

The previous prime is 617387. The next prime is 617401. The reversal of 617398 is 893716.

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

It is a congruent number.

It is an unprimeable number.

617398 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, 390 + ... + 1177.

It is an arithmetic number, because the mean of its divisors is an integer number (116424).

2⁶¹⁷³⁹⁸ is an apocalyptic number.

617398 is a deficient number, since it is larger than the sum of its proper divisors (313994).

617398 is a wasteful number, since it uses less digits than its factorization.

617398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766.

The product of its digits is 9072, while the sum is 34.

The square root of 617398 is about 785.7467785489. The cubic root of 617398 is about 85.1507359923.

The spelling of 617398 in words is "six hundred seventeen thousand, three hundred ninety-eight".