66826350 has 96 divisors (see below), whose sum is σ = 187488000. Its totient is φ = 17497440.

The previous prime is 66826349. The next prime is 66826367. The reversal of 66826350 is 5362866.

It is a super-2 number, since 2×66826350² = 8931522108645000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79231 + ... + 80069.

It is an arithmetic number, because the mean of its divisors is an integer number (1953000).

Almost surely, 2^66826350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66826350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93744000).

66826350 is an abundant number, since it is smaller than the sum of its proper divisors (120661650).

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

66826350 is a wasteful number, since it uses less digits than its factorization.

66826350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919 (or 908 counting only the distinct ones).

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

The square root of 66826350 is about 8174.7385279286. The cubic root of 66826350 is about 405.8036169968.

It can be divided in two parts, 66826 and 350, that added together give a palindrome (67176).

The spelling of 66826350 in words is "sixty-six million, eight hundred twenty-six thousand, three hundred fifty".