344448661 has 4 divisors (see below), whose sum is σ = 344584800. Its totient is φ = 344312524.

The previous prime is 344448659. The next prime is 344448673. The reversal of 344448661 is 166844443.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166844443 = 17 ⋅9814379.

It is a cyclic number.

It is not a de Polignac number, because 344448661 - 2¹ = 344448659 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 (344440661) 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, 64201 + ... + 69358.

It is an arithmetic number, because the mean of its divisors is an integer number (86146200).

Almost surely, 2^344448661 is an apocalyptic number.

It is an amenable number.

344448661 is a deficient number, since it is larger than the sum of its proper divisors (136139).

344448661 is a wasteful number, since it uses less digits than its factorization.

344448661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136138.

The product of its digits is 221184, while the sum is 40.

The square root of 344448661 is about 18559.3281397792. The cubic root of 344448661 is about 700.9840995225.

The spelling of 344448661 in words is "three hundred forty-four million, four hundred forty-eight thousand, six hundred sixty-one".