345660667 has 4 divisors (see below), whose sum is σ = 377084376. Its totient is φ = 314236960.

The previous prime is 345660649. The next prime is 345660671. The reversal of 345660667 is 766066543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345660667 - 2¹¹ = 345658619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345660967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15711838 + ... + 15711859.

It is an arithmetic number, because the mean of its divisors is an integer number (94271094).

Almost surely, 2^345660667 is an apocalyptic number.

345660667 is a deficient number, since it is larger than the sum of its proper divisors (31423709).

345660667 is a wasteful number, since it uses less digits than its factorization.

345660667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31423708.

The product of its (nonzero) digits is 544320, while the sum is 43.

The square root of 345660667 is about 18591.9516726997. The cubic root of 345660667 is about 701.8053175890.

The spelling of 345660667 in words is "three hundred forty-five million, six hundred sixty thousand, six hundred sixty-seven".