654513 has 4 divisors (see below), whose sum is σ = 872688. Its totient is φ = 436340.

The previous prime is 654509. The next prime is 654527. The reversal of 654513 is 315456.

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 654513 - 2² = 654509 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (654553) 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, 109083 + ... + 109088.

It is an arithmetic number, because the mean of its divisors is an integer number (218172).

2⁶⁵⁴⁵¹³ is an apocalyptic number.

It is an amenable number.

654513 is a deficient number, since it is larger than the sum of its proper divisors (218175).

654513 is a wasteful number, since it uses less digits than its factorization.

654513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218174.

The product of its digits is 1800, while the sum is 24.

The square root of 654513 is about 809.0197772613. The cubic root of 654513 is about 86.8239271603.

Adding to 654513 its reverse (315456), we get a palindrome (969969).

The spelling of 654513 in words is "six hundred fifty-four thousand, five hundred thirteen".