66532026 has 32 divisors (see below), whose sum is σ = 146585088. Its totient is φ = 19963440.

The previous prime is 66532021. The next prime is 66532043. The reversal of 66532026 is 62023566.

It is a junction number, because it is equal to n+sod(n) for n = 66531984 and 66532002.

It is not an unprimeable number, because it can be changed into a prime (66532021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1905 + ... + 11691.

It is an arithmetic number, because the mean of its divisors is an integer number (4580784).

Almost surely, 2^66532026 is an apocalyptic number.

66532026 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 66532026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73292544).

66532026 is an abundant number, since it is smaller than the sum of its proper divisors (80053062).

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

66532026 is a wasteful number, since it uses less digits than its factorization.

66532026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 66532026 is about 8156.7166188363. The cubic root of 66532026 is about 405.2069784899.

The spelling of 66532026 in words is "sixty-six million, five hundred thirty-two thousand, twenty-six".