346691 has 4 divisors (see below), whose sum is σ = 350952. Its totient is φ = 342432.

The previous prime is 346669. The next prime is 346699. The reversal of 346691 is 196643.

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 346691 - 2⁶ = 346627 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 (346699) 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, 2006 + ... + 2171.

It is an arithmetic number, because the mean of its divisors is an integer number (87738).

2³⁴⁶⁶⁹¹ is an apocalyptic number.

346691 is a deficient number, since it is larger than the sum of its proper divisors (4261).

346691 is an equidigital number, since it uses as much as digits as its factorization.

346691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260.

The product of its digits is 3888, while the sum is 29.

The square root of 346691 is about 588.8047214485. The cubic root of 346691 is about 70.2501931328.

It can be divided in two parts, 346 and 691, that multiplied together give a triangular number (239086 = T₆₉₁).

The spelling of 346691 in words is "three hundred forty-six thousand, six hundred ninety-one".