666034721623270 has 8 divisors (see below), whose sum is σ = 1198862498921904. Its totient is φ = 266413888649304.

The previous prime is 666034721623247. The next prime is 666034721623351. The reversal of 666034721623270 is 72326127430666.

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

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, 33301736081154 + ... + 33301736081173.

It is an arithmetic number, because the mean of its divisors is an integer number (149857812365238).

Almost surely, 2^{666034721623270} is an apocalyptic number.

666034721623270 is a deficient number, since it is larger than the sum of its proper divisors (532827777298634).

666034721623270 is a wasteful number, since it uses less digits than its factorization.

666034721623270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66603472162334.

The product of its (nonzero) digits is 18289152, while the sum is 55.

The spelling of 666034721623270 in words is "six hundred sixty-six trillion, thirty-four billion, seven hundred twenty-one million, six hundred twenty-three thousand, two hundred seventy".