681204319 has 2 divisors, whose sum is σ = 681204320. Its totient is φ = 681204318.

The previous prime is 681204269. The next prime is 681204379. The reversal of 681204319 is 913402186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 681204319 - 2¹⁷ = 681073247 is a prime.

It is a super-2 number, since 2×681204319² = 928078648448507522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681204379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340602159 + 340602160.

It is an arithmetic number, because the mean of its divisors is an integer number (340602160).

Almost surely, 2^681204319 is an apocalyptic number.

681204319 is a deficient number, since it is larger than the sum of its proper divisors (1).

681204319 is an equidigital number, since it uses as much as digits as its factorization.

681204319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 681204319 is about 26099.8911683555. The cubic root of 681204319 is about 879.8847640944.

The spelling of 681204319 in words is "six hundred eighty-one million, two hundred four thousand, three hundred nineteen".