654712 has 8 divisors (see below), whose sum is σ = 1227600. Its totient is φ = 327352.

The previous prime is 654701. The next prime is 654727. The reversal of 654712 is 217456.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

654712 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 40912 + ... + 40927.

It is an arithmetic number, because the mean of its divisors is an integer number (153450).

2⁶⁵⁴⁷¹² is an apocalyptic number.

It is an amenable number.

654712 is a deficient number, since it is larger than the sum of its proper divisors (572888).

654712 is a wasteful number, since it uses less digits than its factorization.

654712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81845 (or 81841 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 654712 is about 809.1427562550. The cubic root of 654712 is about 86.8327256668.

The spelling of 654712 in words is "six hundred fifty-four thousand, seven hundred twelve".