211264066 has 16 divisors (see below), whose sum is σ = 361348344. Its totient is φ = 91770624.

The previous prime is 211264063. The next prime is 211264069. The reversal of 211264066 is 660462112.

It is an interprime number because it is at equal distance from previous prime (211264063) and next prime (211264069).

It can be written as a sum of positive squares in 4 ways, for example, as 169390225 + 41873841 = 13015^2 + 6471^2 .

It is not an unprimeable number, because it can be changed into a prime (211264063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238545 + ... + 239428.

Almost surely, 2^211264066 is an apocalyptic number.

211264066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

211264066 is a deficient number, since it is larger than the sum of its proper divisors (150084278).

211264066 is a wasteful number, since it uses less digits than its factorization.

211264066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478005.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 211264066 is about 14534.9257308044. The cubic root of 211264066 is about 595.5824308872.

The spelling of 211264066 in words is "two hundred eleven million, two hundred sixty-four thousand, sixty-six".