366247666 has 4 divisors (see below), whose sum is σ = 549371502. Its totient is φ = 183123832.

The previous prime is 366247627. The next prime is 366247669. The reversal of 366247666 is 666742663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666742663 = 509 ⋅1309907.

It can be written as a sum of positive squares in only one way, i.e., 362331225 + 3916441 = 19035^2 + 1979^2 .

It is not an unprimeable number, because it can be changed into a prime (366247669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91561915 + ... + 91561918.

Almost surely, 2^366247666 is an apocalyptic number.

366247666 is a deficient number, since it is larger than the sum of its proper divisors (183123836).

366247666 is a wasteful number, since it uses less digits than its factorization.

366247666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183123835.

The product of its digits is 1306368, while the sum is 46.

The square root of 366247666 is about 19137.5982296630. The cubic root of 366247666 is about 715.4703189542.

The spelling of 366247666 in words is "three hundred sixty-six million, two hundred forty-seven thousand, six hundred sixty-six".