366278641 has 4 divisors (see below), whose sum is σ = 367328500. Its totient is φ = 365228784.

The previous prime is 366278639. The next prime is 366278669. The reversal of 366278641 is 146872663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 258534241 + 107744400 = 16079^2 + 10380^2 .

It is a cyclic number.

It is not a de Polignac number, because 366278641 - 2¹ = 366278639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (366273641) 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 3 ways as a sum of consecutive naturals, for example, 524406 + ... + 525103.

It is an arithmetic number, because the mean of its divisors is an integer number (91832125).

Almost surely, 2^366278641 is an apocalyptic number.

It is an amenable number.

366278641 is a deficient number, since it is larger than the sum of its proper divisors (1049859).

366278641 is a wasteful number, since it uses less digits than its factorization.

366278641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049858.

The product of its digits is 290304, while the sum is 43.

The square root of 366278641 is about 19138.4074833827. The cubic root of 366278641 is about 715.4904884283.

The spelling of 366278641 in words is "three hundred sixty-six million, two hundred seventy-eight thousand, six hundred forty-one".