617397 has 16 divisors (see below), whose sum is σ = 917568. Its totient is φ = 366080.

The previous prime is 617387. The next prime is 617401. The reversal of 617397 is 793716.

It is not a de Polignac number, because 617397 - 2⁶ = 617333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1573 + ... + 1925.

It is an arithmetic number, because the mean of its divisors is an integer number (57348).

2⁶¹⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

617397 is a deficient number, since it is larger than the sum of its proper divisors (300171).

617397 is a wasteful number, since it uses less digits than its factorization.

617397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its digits is 7938, while the sum is 33.

The square root of 617397 is about 785.7461422113. The cubic root of 617397 is about 85.1506900194.

The spelling of 617397 in words is "six hundred seventeen thousand, three hundred ninety-seven".