346638861 has 12 divisors (see below), whose sum is σ = 500862492. Its totient is φ = 231017856.

The previous prime is 346638847. The next prime is 346638881. The reversal of 346638861 is 168836643.

346638861 is a `hidden beast` number, since 3 + 4 + 6 + 638 + 8 + 6 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 189612900 + 157025961 = 13770^2 + 12531^2 .

It is not a de Polignac number, because 346638861 - 2¹⁴ = 346622477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346638841) 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, 48085 + ... + 54821.

It is an arithmetic number, because the mean of its divisors is an integer number (41738541).

Almost surely, 2^346638861 is an apocalyptic number.

It is an amenable number.

346638861 is a deficient number, since it is larger than the sum of its proper divisors (154223631).

346638861 is a wasteful number, since it uses less digits than its factorization.

346638861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12460 (or 12457 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 346638861 is about 18618.2400081211. The cubic root of 346638861 is about 702.4667130456.

The spelling of 346638861 in words is "three hundred forty-six million, six hundred thirty-eight thousand, eight hundred sixty-one".