920617 has 4 divisors (see below), whose sum is σ = 923076. Its totient is φ = 918160.

The previous prime is 920609. The next prime is 920641. The reversal of 920617 is 716029.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 716029 = 67 ⋅10687.

It can be written as a sum of positive squares in 2 ways, for example, as 126736 + 793881 = 356^2 + 891^2 .

It is a cyclic number.

It is not a de Polignac number, because 920617 - 2³ = 920609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920591 and 920600.

It is not an unprimeable number, because it can be changed into a prime (920677) 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, 538 + ... + 1459.

It is an arithmetic number, because the mean of its divisors is an integer number (230769).

2⁹²⁰⁶¹⁷ is an apocalyptic number.

It is an amenable number.

920617 is a deficient number, since it is larger than the sum of its proper divisors (2459).

920617 is a wasteful number, since it uses less digits than its factorization.

920617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 920617 is about 959.4878842383. The cubic root of 920617 is about 97.2806200569.

The spelling of 920617 in words is "nine hundred twenty thousand, six hundred seventeen".