61668266 has 8 divisors (see below), whose sum is σ = 100911744. Its totient is φ = 28031020.

The previous prime is 61668251. The next prime is 61668287. The reversal of 61668266 is 66286616.

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

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 1401530 + ... + 1401573.

It is an arithmetic number, because the mean of its divisors is an integer number (12613968).

Almost surely, 2^61668266 is an apocalyptic number.

61668266 is a deficient number, since it is larger than the sum of its proper divisors (39243478).

61668266 is a wasteful number, since it uses less digits than its factorization.

61668266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803116.

The product of its digits is 124416, while the sum is 41.

The square root of 61668266 is about 7852.9144908117. The cubic root of 61668266 is about 395.0820018825.

The spelling of 61668266 in words is "sixty-one million, six hundred sixty-eight thousand, two hundred sixty-six".