654149 has 2 divisors, whose sum is σ = 654150. Its totient is φ = 654148.

The previous prime is 654127. The next prime is 654161. The reversal of 654149 is 941456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351649 + 302500 = 593^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 654149 - 2⁸ = 653893 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

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

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327074 + 327075.

It is an arithmetic number, because the mean of its divisors is an integer number (327075).

2⁶⁵⁴¹⁴⁹ is an apocalyptic number.

It is an amenable number.

654149 is a deficient number, since it is larger than the sum of its proper divisors (1).

654149 is an equidigital number, since it uses as much as digits as its factorization.

654149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 654149 is about 808.7947823768. The cubic root of 654149 is about 86.8078287940.

The spelling of 654149 in words is "six hundred fifty-four thousand, one hundred forty-nine".