346778884 has 9 divisors (see below), whose sum is σ = 606928231. Its totient is φ = 173370820.

The previous prime is 346778863. The next prime is 346778891. The reversal of 346778884 is 488877643.

It is a happy number.

The square root of 346778884 is 18622.

It is a perfect power (a square), and thus also a powerful number.

It is a super-3 number, since 3×346778884³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 32589 + ... + 41899.

Almost surely, 2^346778884 is an apocalyptic number.

346778884 is the 18622-nd square number.

It is an amenable number.

346778884 is a deficient number, since it is larger than the sum of its proper divisors (260149347).

346778884 is an frugal number, since it uses more digits than its factorization.

346778884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18626 (or 9313 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 55.

The cubic root of 346778884 is about 702.5612862613.

The spelling of 346778884 in words is "three hundred forty-six million, seven hundred seventy-eight thousand, eight hundred eighty-four".