340619557 has 2 divisors, whose sum is σ = 340619558. Its totient is φ = 340619556.

The previous prime is 340619549. The next prime is 340619563. The reversal of 340619557 is 755916043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 270076356 + 70543201 = 16434^2 + 8399^2 .

It is a cyclic number.

It is not a de Polignac number, because 340619557 - 2³ = 340619549 is a prime.

It is a super-2 number, since 2×340619557² = 232043365221752498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340613557) 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 as a sum of consecutive naturals, namely, 170309778 + 170309779.

It is an arithmetic number, because the mean of its divisors is an integer number (170309779).

Almost surely, 2^340619557 is an apocalyptic number.

It is an amenable number.

340619557 is a deficient number, since it is larger than the sum of its proper divisors (1).

340619557 is an equidigital number, since it uses as much as digits as its factorization.

340619557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 340619557 is about 18455.8813661120. The cubic root of 340619557 is about 698.3768903795.

The spelling of 340619557 in words is "three hundred forty million, six hundred nineteen thousand, five hundred fifty-seven".