654545 has 8 divisors (see below), whose sum is σ = 793320. Its totient is φ = 518400.

The previous prime is 654541. The next prime is 654553. The reversal of 654545 is 545456.

654545 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 4 ways, for example, as 1681 + 652864 = 41^2 + 808^2 .

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

It is not a de Polignac number, because 654545 - 2² = 654541 is a prime.

It is an alternating number because its digits alternate between even and odd.

654545 is a modest number, since divided by 4545 gives 65 as remainder.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 654545.

It is not an unprimeable number, because it can be changed into a prime (654541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56 + ... + 1145.

It is an arithmetic number, because the mean of its divisors is an integer number (99165).

2⁶⁵⁴⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

654545 is a deficient number, since it is larger than the sum of its proper divisors (138775).

654545 is a wasteful number, since it uses less digits than its factorization.

654545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315.

The product of its digits is 12000, while the sum is 29.

The square root of 654545 is about 809.0395540392. The cubic root of 654545 is about 86.8253421159.

The spelling of 654545 in words is "six hundred fifty-four thousand, five hundred forty-five".