66379287 has 16 divisors (see below), whose sum is σ = 97640928. Its totient is φ = 39851520.

The previous prime is 66379283. The next prime is 66379301. The reversal of 66379287 is 78297366.

It is not a de Polignac number, because 66379287 - 2² = 66379283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66379283) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19158 + ... + 22355.

It is an arithmetic number, because the mean of its divisors is an integer number (6102558).

Almost surely, 2^66379287 is an apocalyptic number.

66379287 is a deficient number, since it is larger than the sum of its proper divisors (31261641).

66379287 is a wasteful number, since it uses less digits than its factorization.

66379287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41570.

The product of its digits is 762048, while the sum is 48.

The square root of 66379287 is about 8147.3484643778. The cubic root of 66379287 is about 404.8966601147.

It can be divided in two parts, 66379 and 287, that added together give a palindrome (66666).

The spelling of 66379287 in words is "sixty-six million, three hundred seventy-nine thousand, two hundred eighty-seven".