166213236 has 48 divisors (see below), whose sum is σ = 443874816. Its totient is φ = 47421024.

The previous prime is 166213183. The next prime is 166213237. The reversal of 166213236 is 632312661.

166213236 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166213237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98875 + ... + 100541.

It is an arithmetic number, because the mean of its divisors is an integer number (9247392).

Almost surely, 2^166213236 is an apocalyptic number.

It is an amenable number.

166213236 is an abundant number, since it is smaller than the sum of its proper divisors (277661580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166213236 is a wasteful number, since it uses less digits than its factorization.

166213236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868 (or 2866 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

The square root of 166213236 is about 12892.3712326321. The cubic root of 166213236 is about 549.8216898565.

Adding to 166213236 its reverse (632312661), we get a palindrome (798525897).

The spelling of 166213236 in words is "one hundred sixty-six million, two hundred thirteen thousand, two hundred thirty-six".