654745 has 16 divisors (see below), whose sum is σ = 967680. Its totient is φ = 414144.

The previous prime is 654743. The next prime is 654749. The reversal of 654745 is 547456.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 654745 - 2¹ = 654743 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (654743) 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 15 ways as a sum of consecutive naturals, for example, 265 + ... + 1174.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2⁶⁵⁴⁷⁴⁵ is an apocalyptic number.

654745 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

654745 is a deficient number, since it is larger than the sum of its proper divisors (312935).

654745 is a wasteful number, since it uses less digits than its factorization.

654745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464.

The product of its digits is 16800, while the sum is 31.

The square root of 654745 is about 809.1631479498. The cubic root of 654745 is about 86.8341845433.

The spelling of 654745 in words is "six hundred fifty-four thousand, seven hundred forty-five".