345688667 has 4 divisors (see below), whose sum is σ = 345747240. Its totient is φ = 345630096.

The previous prime is 345688649. The next prime is 345688699. The reversal of 345688667 is 766886543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766886543 = 59 ⋅12998077.

It is a cyclic number.

It is not a de Polignac number, because 345688667 - 2²⁰ = 344640091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345688627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19298 + ... + 32615.

It is an arithmetic number, because the mean of its divisors is an integer number (86436810).

Almost surely, 2^345688667 is an apocalyptic number.

345688667 is a deficient number, since it is larger than the sum of its proper divisors (58573).

345688667 is an equidigital number, since it uses as much as digits as its factorization.

345688667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58572.

The product of its digits is 5806080, while the sum is 53.

The square root of 345688667 is about 18592.7046714565. The cubic root of 345688667 is about 701.8242668266.

The spelling of 345688667 in words is "three hundred forty-five million, six hundred eighty-eight thousand, six hundred sixty-seven".