66424506 has 32 divisors (see below), whose sum is σ = 143106048. Its totient is φ = 20494320.

The previous prime is 66424459. The next prime is 66424507. The reversal of 66424506 is 60542466.

It is not an unprimeable number, because it can be changed into a prime (66424507) 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, 3486 + ... + 12041.

It is an arithmetic number, because the mean of its divisors is an integer number (4472064).

Almost surely, 2^66424506 is an apocalyptic number.

66424506 is an abundant number, since it is smaller than the sum of its proper divisors (76681542).

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

66424506 is a wasteful number, since it uses less digits than its factorization.

66424506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15586.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 66424506 is about 8150.1230665555. The cubic root of 66424506 is about 404.9885806870.

The spelling of 66424506 in words is "sixty-six million, four hundred twenty-four thousand, five hundred six".