605651 has 4 divisors (see below), whose sum is σ = 613032. Its totient is φ = 598272.

The previous prime is 605641. The next prime is 605687. The reversal of 605651 is 156506.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-605651 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 605651.

It is not an unprimeable number, because it can be changed into a prime (605641) 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, 3566 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (153258).

2⁶⁰⁵⁶⁵¹ is an apocalyptic number.

605651 is a deficient number, since it is larger than the sum of its proper divisors (7381).

605651 is an equidigital number, since it uses as much as digits as its factorization.

605651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7380.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 605651 is about 778.2358254411. The cubic root of 605651 is about 84.6072305556.

The spelling of 605651 in words is "six hundred five thousand, six hundred fifty-one".