366666663 has 48 divisors (see below), whose sum is σ = 554143968. Its totient is φ = 215424000.

The previous prime is 366666647. The next prime is 366666689.

366666663 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 366666663 - 2⁴ = 366666647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366666613) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2676331 + ... + 2676467.

It is an arithmetic number, because the mean of its divisors is an integer number (11544666).

Almost surely, 2^366666663 is an apocalyptic number.

366666663 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

366666663 is a deficient number, since it is larger than the sum of its proper divisors (187477305).

366666663 is a wasteful number, since it uses less digits than its factorization.

366666663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 325 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 48.

The square root of 366666663 is about 19148.5420593841. The cubic root of 366666663 is about 715.7430539538.

It can be divided in two parts, 3 and 66666663, that added together give a palindrome (66666666).

The spelling of 366666663 in words is "three hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-three".