654019 has 2 divisors, whose sum is σ = 654020. Its totient is φ = 654018.

The previous prime is 654011. The next prime is 654023. The reversal of 654019 is 910456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654019 - 2³ = 654011 is a prime.

It is a super-2 number, since 2×654019² = 855481704722, which contains 22 as substring.

654019 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 653984 and 654002.

It is not a weakly prime, because it can be changed into another prime (654011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327009 + 327010.

It is an arithmetic number, because the mean of its divisors is an integer number (327010).

2⁶⁵⁴⁰¹⁹ is an apocalyptic number.

654019 is a deficient number, since it is larger than the sum of its proper divisors (1).

654019 is an equidigital number, since it uses as much as digits as its factorization.

654019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 654019 is about 808.7144118909. The cubic root of 654019 is about 86.8020779303.

The spelling of 654019 in words is "six hundred fifty-four thousand, nineteen".