654740 has 24 divisors (see below), whose sum is σ = 1448160. Its totient is φ = 247968.

The previous prime is 654739. The next prime is 654743. The reversal of 654740 is 47456.

654740 = T₄₅ + T₄₆ + ... + T₁₅₈.

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 654740.

It is not an unprimeable number, because it can be changed into a prime (654743) 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, 482 + ... + 1241.

It is an arithmetic number, because the mean of its divisors is an integer number (60340).

2⁶⁵⁴⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

654740 is an abundant number, since it is smaller than the sum of its proper divisors (793420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654740 is a wasteful number, since it uses less digits than its factorization.

654740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751 (or 1749 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 654740 is about 809.1600583321. The cubic root of 654740 is about 86.8339635046.

The spelling of 654740 in words is "six hundred fifty-four thousand, seven hundred forty".