654812 has 12 divisors (see below), whose sum is σ = 1155840. Its totient is φ = 324576.

The previous prime is 654803. The next prime is 654817. The reversal of 654812 is 218456.

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 654812.

It is not an unprimeable number, because it can be changed into a prime (654817) by changing a digit.

654812 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 1152.

It is an arithmetic number, because the mean of its divisors is an integer number (96320).

2⁶⁵⁴⁸¹² is an apocalyptic number.

It is an amenable number.

654812 is a deficient number, since it is larger than the sum of its proper divisors (501028).

654812 is a wasteful number, since it uses less digits than its factorization.

654812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1418 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 654812 is about 809.2045476887. The cubic root of 654812 is about 86.8371463539.

The spelling of 654812 in words is "six hundred fifty-four thousand, eight hundred twelve".