66061238 has 8 divisors (see below), whose sum is σ = 100771560. Its totient is φ = 32470720.

The previous prime is 66061223. The next prime is 66061253. The reversal of 66061238 is 83216066.

66061238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (66061223) and next prime (66061253).

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

It is a congruent number.

It is an unprimeable number.

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, 279803 + ... + 280038.

It is an arithmetic number, because the mean of its divisors is an integer number (12596445).

Almost surely, 2^66061238 is an apocalyptic number.

66061238 is a deficient number, since it is larger than the sum of its proper divisors (34710322).

66061238 is a wasteful number, since it uses less digits than its factorization.

66061238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559902.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 66061238 is about 8127.8064691527. The cubic root of 66061238 is about 404.2489520396.

The spelling of 66061238 in words is "sixty-six million, sixty-one thousand, two hundred thirty-eight".