66558342 has 16 divisors (see below), whose sum is σ = 133228080. Its totient is φ = 22167552.

The previous prime is 66558319. The next prime is 66558347. The reversal of 66558342 is 24385566.

It is a self number, because there is not a number n which added to its sum of digits gives 66558342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66558347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4518 + ... + 12390.

It is an arithmetic number, because the mean of its divisors is an integer number (8326755).

Almost surely, 2^66558342 is an apocalyptic number.

66558342 is an abundant number, since it is smaller than the sum of its proper divisors (66669738).

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

66558342 is a wasteful number, since it uses less digits than its factorization.

66558342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9287.

The product of its digits is 172800, while the sum is 39.

The square root of 66558342 is about 8158.3296084431. The cubic root of 66558342 is about 405.2603964795.

The spelling of 66558342 in words is "sixty-six million, five hundred fifty-eight thousand, three hundred forty-two".