666211357 has 8 divisors (see below), whose sum is σ = 762019776. Its totient is φ = 570561792.

The previous prime is 666211331. The next prime is 666211363. The reversal of 666211357 is 753112666.

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

It is a cyclic number.

It is not a de Polignac number, because 666211357 - 2¹⁹ = 665687069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666211327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30583 + ... + 47620.

It is an arithmetic number, because the mean of its divisors is an integer number (95252472).

Almost surely, 2^666211357 is an apocalyptic number.

It is an amenable number.

666211357 is a deficient number, since it is larger than the sum of its proper divisors (95808419).

666211357 is a wasteful number, since it uses less digits than its factorization.

666211357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79427.

The product of its digits is 45360, while the sum is 37.

The square root of 666211357 is about 25811.0704349897. The cubic root of 666211357 is about 873.3815446292.

The spelling of 666211357 in words is "six hundred sixty-six million, two hundred eleven thousand, three hundred fifty-seven".