66426000 has 80 divisors (see below), whose sum is σ = 214176768. Its totient is φ = 17712000.

The previous prime is 66425999. The next prime is 66426007. The reversal of 66426000 is 62466.

66426000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (66426007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465 + ... + 11535.

Almost surely, 2^66426000 is an apocalyptic number.

66426000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66426000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107088384).

66426000 is an abundant number, since it is smaller than the sum of its proper divisors (147750768).

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

66426000 is a wasteful number, since it uses less digits than its factorization.

66426000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11097 (or 11081 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 66426000 is about 8150.2147210978. The cubic root of 66426000 is about 404.9916169580.

Adding to 66426000 its reverse (62466), we get a palindrome (66488466).

The spelling of 66426000 in words is "sixty-six million, four hundred twenty-six thousand".