654393 has 4 divisors (see below), whose sum is σ = 872528. Its totient is φ = 436260.

The previous prime is 654371. The next prime is 654397. The reversal of 654393 is 393456.

It is a happy number.

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 not a de Polignac number, because 654393 - 2⁹ = 653881 is a prime.

It is a D-number.

It is a Duffinian number.

654393 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 654393.

It is not an unprimeable number, because it can be changed into a prime (654397) 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, 109063 + ... + 109068.

It is an arithmetic number, because the mean of its divisors is an integer number (218132).

2⁶⁵⁴³⁹³ is an apocalyptic number.

It is an amenable number.

654393 is a deficient number, since it is larger than the sum of its proper divisors (218135).

654393 is a wasteful number, since it uses less digits than its factorization.

654393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218134.

The product of its digits is 9720, while the sum is 30.

The square root of 654393 is about 808.9456100382. The cubic root of 654393 is about 86.8186206662.

The spelling of 654393 in words is "six hundred fifty-four thousand, three hundred ninety-three".