666770774 has 8 divisors (see below), whose sum is σ = 1000337688. Its totient is φ = 333324880.

The previous prime is 666770749. The next prime is 666770807. The reversal of 666770774 is 477077666.

It is a happy number.

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, 14927 + ... + 39450.

It is an arithmetic number, because the mean of its divisors is an integer number (125042211).

Almost surely, 2^666770774 is an apocalyptic number.

666770774 is a deficient number, since it is larger than the sum of its proper divisors (333566914).

666770774 is a wasteful number, since it uses less digits than its factorization.

666770774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60510.

The product of its (nonzero) digits is 2074464, while the sum is 50.

The square root of 666770774 is about 25821.9049258570. The cubic root of 666770774 is about 873.6259354358.

The spelling of 666770774 in words is "six hundred sixty-six million, seven hundred seventy thousand, seven hundred seventy-four".