684458051 has 2 divisors, whose sum is σ = 684458052. Its totient is φ = 684458050.

The previous prime is 684458041. The next prime is 684458057. The reversal of 684458051 is 150854486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 684458051 - 2⁶ = 684457987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (684458057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342229025 + 342229026.

It is an arithmetic number, because the mean of its divisors is an integer number (342229026).

Almost surely, 2^684458051 is an apocalyptic number.

684458051 is a deficient number, since it is larger than the sum of its proper divisors (1).

684458051 is an equidigital number, since it uses as much as digits as its factorization.

684458051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 684458051 is about 26162.1492045283. The cubic root of 684458051 is about 881.2834453313.

The spelling of 684458051 in words is "six hundred eighty-four million, four hundred fifty-eight thousand, fifty-one".