346688489 has 16 divisors (see below), whose sum is σ = 406369920. Its totient is φ = 289578240.

The previous prime is 346688443. The next prime is 346688519. The reversal of 346688489 is 984886643.

It is a happy number.

It is not a de Polignac number, because 346688489 - 2²⁰ = 345639913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346688689) 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, 161777 + ... + 163905.

It is an arithmetic number, because the mean of its divisors is an integer number (25398120).

Almost surely, 2^346688489 is an apocalyptic number.

It is an amenable number.

346688489 is a deficient number, since it is larger than the sum of its proper divisors (59681431).

346688489 is a wasteful number, since it uses less digits than its factorization.

346688489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720.

The product of its digits is 7962624, while the sum is 56.

The square root of 346688489 is about 18619.5727394589. The cubic root of 346688489 is about 702.5002353060.

The spelling of 346688489 in words is "three hundred forty-six million, six hundred eighty-eight thousand, four hundred eighty-nine".