340185897 has 12 divisors (see below), whose sum is σ = 503365044. Its totient is φ = 221258880.

The previous prime is 340185821. The next prime is 340185907. The reversal of 340185897 is 798581043.

It can be written as a sum of positive squares in 2 ways, for example, as 16941456 + 323244441 = 4116^2 + 17979^2 .

It is not a de Polignac number, because 340185897 - 2¹¹ = 340183849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340185817) 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 in 11 ways as a sum of consecutive naturals, for example, 460588 + ... + 461325.

It is an arithmetic number, because the mean of its divisors is an integer number (41947087).

Almost surely, 2^340185897 is an apocalyptic number.

It is an amenable number.

340185897 is a deficient number, since it is larger than the sum of its proper divisors (163179147).

340185897 is a wasteful number, since it uses less digits than its factorization.

340185897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921960 (or 921957 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 340185897 is about 18444.1290659115. The cubic root of 340185897 is about 698.0803848550.

It can be divided in two parts, 3401 and 85897, that added together give a palindrome (89298).

The spelling of 340185897 in words is "three hundred forty million, one hundred eighty-five thousand, eight hundred ninety-seven".