345771 has 12 divisors (see below), whose sum is σ = 505648. Its totient is φ = 227664.

The previous prime is 345769. The next prime is 345773. The reversal of 345771 is 177543.

It is an interprime number because it is at equal distance from previous prime (345769) and next prime (345773).

It is not a de Polignac number, because 345771 - 2¹ = 345769 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 741 + ... + 1113.

2³⁴⁵⁷⁷¹ is an apocalyptic number.

345771 is a deficient number, since it is larger than the sum of its proper divisors (159877).

345771 is a wasteful number, since it uses less digits than its factorization.

345771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 479 counting only the distinct ones).

The product of its digits is 2940, while the sum is 27.

The square root of 345771 is about 588.0229587355. The cubic root of 345771 is about 70.1879980456.

Subtracting from 345771 its sum of digits (27), we obtain a square (345744 = 588²).

The spelling of 345771 in words is "three hundred forty-five thousand, seven hundred seventy-one".