343445661 has 12 divisors (see below), whose sum is σ = 534248988. Its totient is φ = 211351104.

The previous prime is 343445659. The next prime is 343445681. The reversal of 343445661 is 166544343.

It can be written as a sum of positive squares in 2 ways, for example, as 225180036 + 118265625 = 15006^2 + 10875^2 .

It is not a de Polignac number, because 343445661 - 2¹ = 343445659 is a prime.

It is a super-3 number, since 3×343445661³ (a number of 27 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343445681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1467600 + ... + 1467833.

It is an arithmetic number, because the mean of its divisors is an integer number (44520749).

Almost surely, 2^343445661 is an apocalyptic number.

It is an amenable number.

343445661 is a deficient number, since it is larger than the sum of its proper divisors (190803327).

343445661 is a wasteful number, since it uses less digits than its factorization.

343445661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935452 (or 2935449 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 343445661 is about 18532.2869878491. The cubic root of 343445661 is about 700.3030395394.

The spelling of 343445661 in words is "three hundred forty-three million, four hundred forty-five thousand, six hundred sixty-one".