66413542 has 16 divisors (see below), whose sum is σ = 108797472. Its totient is φ = 30219840.

The previous prime is 66413539. The next prime is 66413551. The reversal of 66413542 is 24531466.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16143 + ... + 19834.

It is an arithmetic number, because the mean of its divisors is an integer number (6799842).

Almost surely, 2^66413542 is an apocalyptic number.

66413542 is a deficient number, since it is larger than the sum of its proper divisors (42383930).

66413542 is a wasteful number, since it uses less digits than its factorization.

66413542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36063.

The product of its digits is 17280, while the sum is 31.

The square root of 66413542 is about 8149.4504109173. The cubic root of 66413542 is about 404.9662970481.

The spelling of 66413542 in words is "sixty-six million, four hundred thirteen thousand, five hundred forty-two".