340001861 has 4 divisors (see below), whose sum is σ = 345575724. Its totient is φ = 334428000.

The previous prime is 340001833. The next prime is 340001873. The reversal of 340001861 is 168100043.

340001861 is nontrivially palindromic in base 2 and base 4.

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 19412836 + 320589025 = 4406^2 + 17905^2 .

It is a cyclic number.

It is not a de Polignac number, because 340001861 - 2¹⁸ = 339739717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340000861) 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, 2786840 + ... + 2786961.

It is an arithmetic number, because the mean of its divisors is an integer number (86393931).

Almost surely, 2^340001861 is an apocalyptic number.

It is an amenable number.

340001861 is a deficient number, since it is larger than the sum of its proper divisors (5573863).

340001861 is an equidigital number, since it uses as much as digits as its factorization.

340001861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5573862.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 340001861 is about 18439.1393779645. The cubic root of 340001861 is about 697.9544781110.

The spelling of 340001861 in words is "three hundred forty million, one thousand, eight hundred sixty-one".