66144514 has 8 divisors (see below), whose sum is σ = 102417408. Its totient is φ = 32005380.

The previous prime is 66144509. The next prime is 66144541. The reversal of 66144514 is 41544166.

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

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533362 + ... + 533485.

It is an arithmetic number, because the mean of its divisors is an integer number (12802176).

Almost surely, 2^66144514 is an apocalyptic number.

66144514 is a deficient number, since it is larger than the sum of its proper divisors (36272894).

66144514 is a wasteful number, since it uses less digits than its factorization.

66144514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066880.

The product of its digits is 11520, while the sum is 31.

The square root of 66144514 is about 8132.9277631121. The cubic root of 66144514 is about 404.4187444982.

The spelling of 66144514 in words is "sixty-six million, one hundred forty-four thousand, five hundred fourteen".