345516661 has 8 divisors (see below), whose sum is σ = 395138304. Its totient is φ = 295960560.

The previous prime is 345516641. The next prime is 345516671. The reversal of 345516661 is 166615543.

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

It is not a de Polignac number, because 345516661 - 2⁵ = 345516629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345516661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345516641) 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 7 ways as a sum of consecutive naturals, for example, 4510 + ... + 26671.

It is an arithmetic number, because the mean of its divisors is an integer number (49392288).

Almost surely, 2^345516661 is an apocalyptic number.

It is an amenable number.

345516661 is a deficient number, since it is larger than the sum of its proper divisors (49621643).

345516661 is a wasteful number, since it uses less digits than its factorization.

345516661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32771.

The product of its digits is 64800, while the sum is 37.

The square root of 345516661 is about 18588.0784644352. The cubic root of 345516661 is about 701.7078441376.

The spelling of 345516661 in words is "three hundred forty-five million, five hundred sixteen thousand, six hundred sixty-one".