345779 has 8 divisors (see below), whose sum is σ = 403968. Its totient is φ = 289800.

The previous prime is 345773. The next prime is 345791. The reversal of 345779 is 977543.

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

It is not a de Polignac number, because 345779 - 2¹⁶ = 280243 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6 and base 10.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345773) 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, 197 + ... + 854.

It is an arithmetic number, because the mean of its divisors is an integer number (50496).

345779 is a Friedman number, since it can be written as 35+9*(7+7)^4, using all its digits and the basic arithmetic operations.

2³⁴⁵⁷⁷⁹ is an apocalyptic number.

345779 is a deficient number, since it is larger than the sum of its proper divisors (58189).

345779 is a wasteful number, since it uses less digits than its factorization.

345779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105.

The product of its digits is 26460, while the sum is 35.

The square root of 345779 is about 588.0297611516. The cubic root of 345779 is about 70.1885393476.

Subtracting from 345779 its sum of digits (35), we obtain a square (345744 = 588²).

The spelling of 345779 in words is "three hundred forty-five thousand, seven hundred seventy-nine".