66603542 has 8 divisors (see below), whose sum is σ = 100266816. Its totient is φ = 33181272.

The previous prime is 66603539. The next prime is 66603547. The reversal of 66603542 is 24530666.

66603542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 66603499 and 66603508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66603547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59558 + ... + 60665.

It is an arithmetic number, because the mean of its divisors is an integer number (12533352).

Almost surely, 2^66603542 is an apocalyptic number.

66603542 is a deficient number, since it is larger than the sum of its proper divisors (33663274).

66603542 is a wasteful number, since it uses less digits than its factorization.

66603542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120502.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 66603542 is about 8161.0993132053. The cubic root of 66603542 is about 405.3521136326.

The spelling of 66603542 in words is "sixty-six million, six hundred three thousand, five hundred forty-two".