346621 has 4 divisors (see below), whose sum is σ = 378144. Its totient is φ = 315100.

The previous prime is 346607. The next prime is 346627. The reversal of 346621 is 126643.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 346621 - 2⁵ = 346589 is a prime.

It is a super-2 number, since 2×346621² = 240292235282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 346592 and 346601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346627) 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, 15745 + ... + 15766.

It is an arithmetic number, because the mean of its divisors is an integer number (94536).

2³⁴⁶⁶²¹ is an apocalyptic number.

It is an amenable number.

346621 is a deficient number, since it is larger than the sum of its proper divisors (31523).

346621 is a wasteful number, since it uses less digits than its factorization.

346621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31522.

The product of its digits is 864, while the sum is 22.

The square root of 346621 is about 588.7452759895. The cubic root of 346621 is about 70.2454647680.

Adding to 346621 its sum of digits (22), we get a palindrome (346643).

The spelling of 346621 in words is "three hundred forty-six thousand, six hundred twenty-one".