653481 has 8 divisors (see below), whose sum is σ = 968160. Its totient is φ = 435636.

The previous prime is 653473. The next prime is 653491. The reversal of 653481 is 184356.

653481 is a `hidden beast` number, since 653 + 4 + 8 + 1 = 666.

It is not a de Polignac number, because 653481 - 2³ = 653473 is a prime.

It is a super-2 number, since 2×653481² = 854074834722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 24203 = 653481 / (6 + 5 + 3 + 4 + 8 + 1).

653481 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 653481.

It is not an unprimeable number, because it can be changed into a prime (653431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12075 + ... + 12128.

It is an arithmetic number, because the mean of its divisors is an integer number (121020).

2⁶⁵³⁴⁸¹ is an apocalyptic number.

It is an amenable number.

653481 is a deficient number, since it is larger than the sum of its proper divisors (314679).

653481 is a wasteful number, since it uses less digits than its factorization.

653481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24212 (or 24206 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 653481 is about 808.3817167650. The cubic root of 653481 is about 86.7782700955.

The spelling of 653481 in words is "six hundred fifty-three thousand, four hundred eighty-one".