66599342 has 4 divisors (see below), whose sum is σ = 99899016. Its totient is φ = 33299670.

The previous prime is 66599339. The next prime is 66599347. The reversal of 66599342 is 24399566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24399566 = 2 ⋅12199783.

It is a junction number, because it is equal to n+sod(n) for n = 66599293 and 66599302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66599347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16649834 + ... + 16649837.

It is an arithmetic number, because the mean of its divisors is an integer number (24974754).

Almost surely, 2^66599342 is an apocalyptic number.

66599342 is a deficient number, since it is larger than the sum of its proper divisors (33299674).

66599342 is a wasteful number, since it uses less digits than its factorization.

66599342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33299673.

The product of its digits is 349920, while the sum is 44.

The square root of 66599342 is about 8160.8419908732. The cubic root of 66599342 is about 405.3435929914.

The spelling of 66599342 in words is "sixty-six million, five hundred ninety-nine thousand, three hundred forty-two".