346921641 has 18 divisors (see below), whose sum is σ = 550807530. Its totient is φ = 210254880.

The previous prime is 346921633. The next prime is 346921643. The reversal of 346921641 is 146129643.

346921641 is a `hidden beast` number, since 3 + 4 + 6 + 9 + 2 + 1 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 345179241 + 1742400 = 18579^2 + 1320^2 .

It is not a de Polignac number, because 346921641 - 2³ = 346921633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 346921596 and 346921605.

It is not an unprimeable number, because it can be changed into a prime (346921643) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 158196 + ... + 160373.

Almost surely, 2^346921641 is an apocalyptic number.

It is an amenable number.

346921641 is a deficient number, since it is larger than the sum of its proper divisors (203885889).

346921641 is a wasteful number, since it uses less digits than its factorization.

346921641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318597 (or 318583 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 346921641 is about 18625.8326256841. The cubic root of 346921641 is about 702.6576798487.

The spelling of 346921641 in words is "three hundred forty-six million, nine hundred twenty-one thousand, six hundred forty-one".