666783374 has 8 divisors (see below), whose sum is σ = 1003978800. Its totient is φ = 332123776.

The previous prime is 666783373. The next prime is 666783419. The reversal of 666783374 is 473387666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666783373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633299 + ... + 634350.

It is an arithmetic number, because the mean of its divisors is an integer number (125497350).

Almost surely, 2^666783374 is an apocalyptic number.

666783374 is a deficient number, since it is larger than the sum of its proper divisors (337195426).

666783374 is a wasteful number, since it uses less digits than its factorization.

666783374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267914.

The product of its digits is 3048192, while the sum is 50.

The square root of 666783374 is about 25822.1489036060. The cubic root of 666783374 is about 873.6314383852.

The spelling of 666783374 in words is "six hundred sixty-six million, seven hundred eighty-three thousand, three hundred seventy-four".