66531126 has 8 divisors (see below), whose sum is σ = 133062264. Its totient is φ = 22177040.

The previous prime is 66531107. The next prime is 66531131. The reversal of 66531126 is 62113566.

It is a sphenic number, since it is the product of 3 distinct primes.

66531126 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 66531093 and 66531102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5544255 + ... + 5544266.

It is an arithmetic number, because the mean of its divisors is an integer number (16632783).

Almost surely, 2^66531126 is an apocalyptic number.

66531126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66531126 is a wasteful number, since it uses less digits than its factorization.

66531126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088526.

The product of its digits is 6480, while the sum is 30.

The square root of 66531126 is about 8156.6614493921. The cubic root of 66531126 is about 405.2051513602.

The spelling of 66531126 in words is "sixty-six million, five hundred thirty-one thousand, one hundred twenty-six".