653545 has 8 divisors (see below), whose sum is σ = 818496. Its totient is φ = 500016.

The previous prime is 653539. The next prime is 653561. The reversal of 653545 is 545356.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 653545 - 2³ = 653537 is a prime.

It is a Duffinian number.

653545 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2727 + ... + 2956.

It is an arithmetic number, because the mean of its divisors is an integer number (102312).

2⁶⁵³⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

653545 is a deficient number, since it is larger than the sum of its proper divisors (164951).

653545 is a wasteful number, since it uses less digits than its factorization.

653545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711.

The product of its digits is 9000, while the sum is 28.

The square root of 653545 is about 808.4213010553. The cubic root of 653545 is about 86.7811029389.

The spelling of 653545 in words is "six hundred fifty-three thousand, five hundred forty-five".