366216649 has 6 divisors (see below), whose sum is σ = 382831946. Its totient is φ = 350293680.

The previous prime is 366216647. The next prime is 366216701. The reversal of 366216649 is 946612663.

It can be written as a sum of positive squares in only one way, i.e., 355699600 + 10517049 = 18860^2 + 3243^2 .

It is not a de Polignac number, because 366216649 - 2¹ = 366216647 is a prime.

It is a super-2 number, since 2×366216649² = 268229268009578402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (366216647) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 345612 + ... + 346669.

Almost surely, 2^366216649 is an apocalyptic number.

It is an amenable number.

366216649 is a deficient number, since it is larger than the sum of its proper divisors (16615297).

366216649 is an equidigital number, since it uses as much as digits as its factorization.

366216649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692327 (or 692304 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 366216649 is about 19136.7878443588. The cubic root of 366216649 is about 715.4501209922.

The spelling of 366216649 in words is "three hundred sixty-six million, two hundred sixteen thousand, six hundred forty-nine".