345679 has 2 divisors, whose sum is σ = 345680. Its totient is φ = 345678.

The previous prime is 345673. The next prime is 345689. The reversal of 345679 is 976543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345679 - 2⁵ = 345647 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172839 + 172840.

It is an arithmetic number, because the mean of its divisors is an integer number (172840).

2³⁴⁵⁶⁷⁹ is an apocalyptic number.

345679 is a deficient number, since it is larger than the sum of its proper divisors (1).

345679 is an equidigital number, since it uses as much as digits as its factorization.

345679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 345679 is about 587.9447252931. The cubic root of 345679 is about 70.1817724718.

It can be divided in two parts, 345 and 679, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 345679 in words is "three hundred forty-five thousand, six hundred seventy-nine".