346861809 has 12 divisors (see below), whose sum is σ = 572597376. Its totient is φ = 198206712.

The previous prime is 346861807. The next prime is 346861811. The reversal of 346861809 is 908168643.

346861809 is a `hidden beast` number, since 3 + 468 + 6 + 180 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (346861807) and next prime (346861811).

It is not a de Polignac number, because 346861809 - 2¹ = 346861807 is a prime.

It is a super-2 number, since 2×346861809² = 240626229085504962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (346861807) 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, 2752809 + ... + 2752934.

It is an arithmetic number, because the mean of its divisors is an integer number (47716448).

Almost surely, 2^346861809 is an apocalyptic number.

It is an amenable number.

346861809 is a deficient number, since it is larger than the sum of its proper divisors (225735567).

346861809 is a wasteful number, since it uses less digits than its factorization.

346861809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505756 (or 5505753 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 346861809 is about 18624.2264000414. The cubic root of 346861809 is about 702.6172827998.

The spelling of 346861809 in words is "three hundred forty-six million, eight hundred sixty-one thousand, eight hundred nine".