340212865 has 4 divisors (see below), whose sum is σ = 408255444. Its totient is φ = 272170288.

The previous prime is 340212827. The next prime is 340212869. The reversal of 340212865 is 568212043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80874049 + 259338816 = 8993^2 + 16104^2 .

It is a cyclic number.

It is not a de Polignac number, because 340212865 - 2²⁵ = 306658433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340212869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34021282 + ... + 34021291.

It is an arithmetic number, because the mean of its divisors is an integer number (102063861).

Almost surely, 2^340212865 is an apocalyptic number.

It is an amenable number.

340212865 is a deficient number, since it is larger than the sum of its proper divisors (68042579).

340212865 is an equidigital number, since it uses as much as digits as its factorization.

340212865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68042578.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 340212865 is about 18444.8601241647. The cubic root of 340212865 is about 698.0988309796.

The spelling of 340212865 in words is "three hundred forty million, two hundred twelve thousand, eight hundred sixty-five".