1066621674 has 8 divisors (see below), whose sum is σ = 2133243360. Its totient is φ = 355540556.

The previous prime is 1066621651. The next prime is 1066621687. The reversal of 1066621674 is 4761266601.

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

1066621674 is an admirable number.

It is a super-2 number, since 2×1066621674² = 2275363590893124552, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88885134 + ... + 88885145.

It is an arithmetic number, because the mean of its divisors is an integer number (266655420).

Almost surely, 2^1066621674 is an apocalyptic number.

1066621674 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066621674 is a wasteful number, since it uses less digits than its factorization.

1066621674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177770284.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 1066621674 is about 32659.1744231234. The cubic root of 1066621674 is about 1021.7315436957.

The spelling of 1066621674 in words is "one billion, sixty-six million, six hundred twenty-one thousand, six hundred seventy-four".