340720205 has 16 divisors (see below), whose sum is σ = 494760960. Its totient is φ = 219892992.

The previous prime is 340720187. The next prime is 340720223. The reversal of 340720205 is 502027043.

It is an interprime number because it is at equal distance from previous prime (340720187) and next prime (340720223).

It is a cyclic number.

It is not a de Polignac number, because 340720205 - 2⁸ = 340719949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285725 + ... + 286914.

It is an arithmetic number, because the mean of its divisors is an integer number (30922560).

Almost surely, 2^340720205 is an apocalyptic number.

340720205 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

340720205 is a deficient number, since it is larger than the sum of its proper divisors (154040755).

340720205 is a wasteful number, since it uses less digits than its factorization.

340720205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572668.

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 340720205 is about 18458.6078835865. The cubic root of 340720205 is about 698.4456702579.

Adding to 340720205 its reverse (502027043), we get a palindrome (842747248).

The spelling of 340720205 in words is "three hundred forty million, seven hundred twenty thousand, two hundred five".