66516342 has 16 divisors (see below), whose sum is σ = 140858352. Its totient is φ = 20867840.

The previous prime is 66516337. The next prime is 66516349. The reversal of 66516342 is 24361566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66516349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325959 + ... + 326162.

It is an arithmetic number, because the mean of its divisors is an integer number (8803647).

Almost surely, 2^66516342 is an apocalyptic number.

66516342 is an abundant number, since it is smaller than the sum of its proper divisors (74342010).

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

66516342 is a wasteful number, since it uses less digits than its factorization.

66516342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652143.

The product of its digits is 25920, while the sum is 33.

The square root of 66516342 is about 8155.7551459077. The cubic root of 66516342 is about 405.1751353507.

The spelling of 66516342 in words is "sixty-six million, five hundred sixteen thousand, three hundred forty-two".