654674 has 4 divisors (see below), whose sum is σ = 982014. Its totient is φ = 327336.

The previous prime is 654671. The next prime is 654679. The reversal of 654674 is 476456.

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

It can be written as a sum of positive squares in only one way, i.e., 368449 + 286225 = 607^2 + 535^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 654674.

It is not an unprimeable number, because it can be changed into a prime (654671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163667 + ... + 163670.

2⁶⁵⁴⁶⁷⁴ is an apocalyptic number.

654674 is a deficient number, since it is larger than the sum of its proper divisors (327340).

654674 is a wasteful number, since it uses less digits than its factorization.

654674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327339.

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

The square root of 654674 is about 809.1192742730. The cubic root of 654674 is about 86.8310456878.

It can be divided in two parts, 65 and 4674, that multiplied together give a triangular number (303810 = T₇₇₉).

The spelling of 654674 in words is "six hundred fifty-four thousand, six hundred seventy-four".