34691 has 4 divisors (see below), whose sum is σ = 35112. Its totient is φ = 34272.

The previous prime is 34687. The next prime is 34693. The reversal of 34691 is 19643.

34691 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 19643 = 13 ⋅1511.

It is a cyclic number.

It is not a de Polignac number, because 34691 - 2² = 34687 is a prime.

It is an Ulam number.

It is a Duffinian number.

34691 is an undulating number in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41 + ... + 266.

It is an arithmetic number, because the mean of its divisors is an integer number (8778).

2³⁴⁶⁹¹ is an apocalyptic number.

34691 is a deficient number, since it is larger than the sum of its proper divisors (421).

34691 is a wasteful number, since it uses less digits than its factorization.

34691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

The product of its digits is 648, while the sum is 23.

The square root of 34691 is about 186.2552012697. The cubic root of 34691 is about 32.6141156079.

Subtracting from 34691 its product of digits (648), we obtain a palindrome (34043).

The spelling of 34691 in words is "thirty-four thousand, six hundred ninety-one".