654012 has 36 divisors (see below), whose sum is σ = 1701336. Its totient is φ = 211680.

The previous prime is 654011. The next prime is 654019. The reversal of 654012 is 210456.

It is a happy number.

654012 is a `hidden beast` number, since 654 + 0 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×654012² = 855463392288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 654012.

It is not an unprimeable number, because it can be changed into a prime (654011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1087 + ... + 1577.

2⁶⁵⁴⁰¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 654012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (850668).

654012 is an abundant number, since it is smaller than the sum of its proper divisors (1047324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654012 is a wasteful number, since it uses less digits than its factorization.

654012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 654012 is about 808.7100840227. The cubic root of 654012 is about 86.8017682467.

Adding to 654012 its reverse (210456), we get a palindrome (864468).

Subtracting from 654012 its reverse (210456), we obtain a square (443556 = 666²).

The spelling of 654012 in words is "six hundred fifty-four thousand, twelve".