654647 has 8 divisors (see below), whose sum is σ = 766752. Its totient is φ = 547200.

The previous prime is 654629. The next prime is 654671. The reversal of 654647 is 746456.

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

It is a cyclic number.

It is not a de Polignac number, because 654647 - 2¹⁰ = 653623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654697) 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, 854 + ... + 1427.

It is an arithmetic number, because the mean of its divisors is an integer number (95844).

2⁶⁵⁴⁶⁴⁷ is an apocalyptic number.

654647 is a deficient number, since it is larger than the sum of its proper divisors (112105).

654647 is a wasteful number, since it uses less digits than its factorization.

654647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its digits is 20160, while the sum is 32.

The square root of 654647 is about 809.1025892926. The cubic root of 654647 is about 86.8298519789.

Subtracting 654647 from its reverse (746456), we obtain a square (91809 = 303²).

The spelling of 654647 in words is "six hundred fifty-four thousand, six hundred forty-seven".