346429681 has 16 divisors (see below), whose sum is σ = 386104320. Its totient is φ = 308669760.

The previous prime is 346429673. The next prime is 346429687. The reversal of 346429681 is 186924643.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 346429681 - 2³ = 346429673 is a prime.

It is a super-2 number, since 2×346429681² = 240027047755523522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346429687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201855 + ... + 203563.

It is an arithmetic number, because the mean of its divisors is an integer number (24131520).

Almost surely, 2^346429681 is an apocalyptic number.

346429681 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

346429681 is a deficient number, since it is larger than the sum of its proper divisors (39674639).

346429681 is a wasteful number, since it uses less digits than its factorization.

346429681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256.

The product of its digits is 248832, while the sum is 43.

The square root of 346429681 is about 18612.6215509799. The cubic root of 346429681 is about 702.3253829074.

The spelling of 346429681 in words is "three hundred forty-six million, four hundred twenty-nine thousand, six hundred eighty-one".