666060278 has 8 divisors (see below), whose sum is σ = 1075943568. Its totient is φ = 307412424.

The previous prime is 666060233. The next prime is 666060331. The reversal of 666060278 is 872060666.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12808826 + ... + 12808877.

It is an arithmetic number, because the mean of its divisors is an integer number (134492946).

Almost surely, 2^666060278 is an apocalyptic number.

666060278 is a deficient number, since it is larger than the sum of its proper divisors (409883290).

666060278 is a wasteful number, since it uses less digits than its factorization.

666060278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25617718.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 666060278 is about 25808.1436372320. The cubic root of 666060278 is about 873.3155197436.

The spelling of 666060278 in words is "six hundred sixty-six million, sixty thousand, two hundred seventy-eight".