66230136 has 192 divisors, whose sum is σ = 220846080. Its totient is φ = 18195840.

The previous prime is 66230123. The next prime is 66230137. The reversal of 66230136 is 63103266.

66230136 is a `hidden beast` number, since 6 + 623 + 0 + 1 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66230137) 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, 421770 + ... + 421926.

It is an arithmetic number, because the mean of its divisors is an integer number (1150240).

Almost surely, 2^66230136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66230136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110423040).

66230136 is an abundant number, since it is smaller than the sum of its proper divisors (154615944).

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

66230136 is a wasteful number, since it uses less digits than its factorization.

66230136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 66230136 is about 8138.1899707490. The cubic root of 66230136 is about 404.5931717189.

It can be divided in two parts, 66230 and 136, that added together give a palindrome (66366).

The spelling of 66230136 in words is "sixty-six million, two hundred thirty thousand, one hundred thirty-six".