340415653 has 2 divisors, whose sum is σ = 340415654. Its totient is φ = 340415652.

The previous prime is 340415641. The next prime is 340415693. The reversal of 340415653 is 356514043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321735969 + 18679684 = 17937^2 + 4322^2 .

It is a cyclic number.

It is not a de Polignac number, because 340415653 - 2²⁵ = 306861221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340415623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170207826 + 170207827.

It is an arithmetic number, because the mean of its divisors is an integer number (170207827).

Almost surely, 2^340415653 is an apocalyptic number.

It is an amenable number.

340415653 is a deficient number, since it is larger than the sum of its proper divisors (1).

340415653 is an equidigital number, since it uses as much as digits as its factorization.

340415653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 340415653 is about 18450.3564464213. The cubic root of 340415653 is about 698.2375068521.

Adding to 340415653 its reverse (356514043), we get a palindrome (696929696).

The spelling of 340415653 in words is "three hundred forty million, four hundred fifteen thousand, six hundred fifty-three".