66413358 has 112 divisors (see below), whose sum is σ = 168566832. Its totient is φ = 19440000.

The previous prime is 66413357. The next prime is 66413359. The reversal of 66413358 is 85331466.

66413358 is a `hidden beast` number, since 6 + 641 + 3 + 3 + 5 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (66413357) and next prime (66413359).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66413357) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 657508 + ... + 657608.

It is an arithmetic number, because the mean of its divisors is an integer number (1505061).

Almost surely, 2^66413358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66413358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84283416).

66413358 is an abundant number, since it is smaller than the sum of its proper divisors (102153474).

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

66413358 is a wasteful number, since it uses less digits than its factorization.

66413358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 158 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 66413358 is about 8149.4391218046. The cubic root of 66413358 is about 404.9659230588.

It can be divided in two parts, 6641 and 3358, that added together give a palindrome (9999).

The spelling of 66413358 in words is "sixty-six million, four hundred thirteen thousand, three hundred fifty-eight".