346666661 has 8 divisors (see below), whose sum is σ = 379064448. Its totient is φ = 314416000.

The previous prime is 346666597. The next prime is 346666679. The reversal of 346666661 is 166666643.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 346666661 - 2⁶ = 346666597 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 (346666361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31820 + ... + 41301.

It is an arithmetic number, because the mean of its divisors is an integer number (47383056).

Almost surely, 2^346666661 is an apocalyptic number.

It is an amenable number.

346666661 is a deficient number, since it is larger than the sum of its proper divisors (32397787).

346666661 is a wasteful number, since it uses less digits than its factorization.

346666661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73563.

The product of its digits is 559872, while the sum is 44.

The square root of 346666661 is about 18618.9865728508. The cubic root of 346666661 is about 702.4854915254.

It can be divided in two parts, 3 and 46666661, that added together give a palindrome (46666664).

The spelling of 346666661 in words is "three hundred forty-six million, six hundred sixty-six thousand, six hundred sixty-one".