211146764 has 6 divisors (see below), whose sum is σ = 369506844. Its totient is φ = 105573380.

The previous prime is 211146763. The next prime is 211146769. The reversal of 211146764 is 467641112.

It is a self number, because there is not a number n which added to its sum of digits gives 211146764.

It is not an unprimeable number, because it can be changed into a prime (211146763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26393342 + ... + 26393349.

It is an arithmetic number, because the mean of its divisors is an integer number (61584474).

Almost surely, 2^211146764 is an apocalyptic number.

It is an amenable number.

211146764 is a deficient number, since it is larger than the sum of its proper divisors (158360080).

211146764 is a wasteful number, since it uses less digits than its factorization.

211146764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52786695 (or 52786693 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 211146764 is about 14530.8899933899. The cubic root of 211146764 is about 595.4721803275.

Adding to 211146764 its reverse (467641112), we get a palindrome (678787876).

The spelling of 211146764 in words is "two hundred eleven million, one hundred forty-six thousand, seven hundred sixty-four".