654677 has 4 divisors (see below), whose sum is σ = 658476. Its totient is φ = 650880.

The previous prime is 654671. The next prime is 654679. The reversal of 654677 is 776456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5041 + 649636 = 71^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 654677 - 2⁶ = 654613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654671) 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 3 ways as a sum of consecutive naturals, for example, 1628 + ... + 1989.

It is an arithmetic number, because the mean of its divisors is an integer number (164619).

2⁶⁵⁴⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

654677 is a deficient number, since it is larger than the sum of its proper divisors (3799).

654677 is a wasteful number, since it uses less digits than its factorization.

654677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798.

The product of its digits is 35280, while the sum is 35.

The square root of 654677 is about 809.1211281384. The cubic root of 654677 is about 86.8311783200.

It can be divided in two parts, 654 and 677, that added together give a palindrome (1331).

The spelling of 654677 in words is "six hundred fifty-four thousand, six hundred seventy-seven".