378346566 has 16 divisors (see below), whose sum is σ = 814900464. Its totient is φ = 116414304.

The previous prime is 378346559. The next prime is 378346597. The reversal of 378346566 is 665643873.

It is a happy number.

It is a super-3 number, since 3×378346566³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 2425221 + ... + 2425376.

It is an arithmetic number, because the mean of its divisors is an integer number (50931279).

Almost surely, 2^378346566 is an apocalyptic number.

378346566 is an abundant number, since it is smaller than the sum of its proper divisors (436553898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

378346566 is a wasteful number, since it uses less digits than its factorization.

378346566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850615.

The product of its digits is 2177280, while the sum is 48.

The square root of 378346566 is about 19451.1327690703. The cubic root of 378346566 is about 723.2635835443.

The spelling of 378346566 in words is "three hundred seventy-eight million, three hundred forty-six thousand, five hundred sixty-six".