617901 has 4 divisors (see below), whose sum is σ = 823872. Its totient is φ = 411932.

The previous prime is 617887. The next prime is 617917. The reversal of 617901 is 109716.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 617901 - 2¹⁰ = 616877 is a prime.

It is a D-number.

It is a Curzon number.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (617951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102981 + ... + 102986.

It is an arithmetic number, because the mean of its divisors is an integer number (205968).

2⁶¹⁷⁹⁰¹ is an apocalyptic number.

It is an amenable number.

617901 is a deficient number, since it is larger than the sum of its proper divisors (205971).

617901 is a wasteful number, since it uses less digits than its factorization.

617901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205970.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 617901 is about 786.0667910553. The cubic root of 617901 is about 85.1738540857.

The spelling of 617901 in words is "six hundred seventeen thousand, nine hundred one".