366378221 has 8 divisors (see below), whose sum is σ = 404745600. Its totient is φ = 328854240.

The previous prime is 366378217. The next prime is 366378239. The reversal of 366378221 is 122873663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 366378221 - 2² = 366378217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366378211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209936 + ... + 211673.

It is an arithmetic number, because the mean of its divisors is an integer number (50593200).

Almost surely, 2^366378221 is an apocalyptic number.

It is an amenable number.

366378221 is a deficient number, since it is larger than the sum of its proper divisors (38367379).

366378221 is a wasteful number, since it uses less digits than its factorization.

366378221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421699.

The product of its digits is 72576, while the sum is 38.

The square root of 366378221 is about 19141.0088814566. The cubic root of 366378221 is about 715.5553225728. Note that the first 3 decimals are identical.

The spelling of 366378221 in words is "three hundred sixty-six million, three hundred seventy-eight thousand, two hundred twenty-one".