344876661 has 6 divisors (see below), whose sum is σ = 498155190. Its totient is φ = 229917768.

The previous prime is 344876659. The next prime is 344876677. The reversal of 344876661 is 166678443.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 233172900 + 111703761 = 15270^2 + 10569^2 .

It is not a de Polignac number, because 344876661 - 2¹ = 344876659 is a prime.

It is a super-2 number, since 2×344876661² = 237879822605017842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344876621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19159806 + ... + 19159823.

It is an arithmetic number, because the mean of its divisors is an integer number (83025865).

Almost surely, 2^344876661 is an apocalyptic number.

It is an amenable number.

344876661 is a deficient number, since it is larger than the sum of its proper divisors (153278529).

344876661 is a wasteful number, since it uses less digits than its factorization.

344876661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38319635 (or 38319632 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 344876661 is about 18570.8551499386. The cubic root of 344876661 is about 701.2743188874.

The spelling of 344876661 in words is "three hundred forty-four million, eight hundred seventy-six thousand, six hundred sixty-one".