346162221 has 16 divisors (see below), whose sum is σ = 525342720. Its totient is φ = 225145440.

The previous prime is 346162199. The next prime is 346162237. The reversal of 346162221 is 122261643.

346162221 is a `hidden beast` number, since 3 + 4 + 616 + 22 + 21 = 666.

It is not a de Polignac number, because 346162221 - 2⁵ = 346162189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346162021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155245 + ... + 157458.

It is an arithmetic number, because the mean of its divisors is an integer number (32833920).

Almost surely, 2^346162221 is an apocalyptic number.

It is an amenable number.

346162221 is a deficient number, since it is larger than the sum of its proper divisors (179180499).

346162221 is a wasteful number, since it uses less digits than its factorization.

346162221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312753 (or 312747 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 346162221 is about 18605.4352542476. The cubic root of 346162221 is about 702.1445936357.

It can be divided in two parts, 3461622 and 21, that added together give a palindrome (3461643).

The spelling of 346162221 in words is "three hundred forty-six million, one hundred sixty-two thousand, two hundred twenty-one".