354662670221 has 8 divisors (see below), whose sum is σ = 388474324920. Its totient is φ = 322289809408.

The previous prime is 354662670211. The next prime is 354662670223. The reversal of 354662670221 is 122076266453.

It can be written as a sum of positive squares in 4 ways, for example, as 170784654121 + 183878016100 = 413261^2 + 428810^2 .

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 354662670221 - 2¹⁰ = 354662669197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354662670223) 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, 359697956 + ... + 359698941.

It is an arithmetic number, because the mean of its divisors is an integer number (48559290615).

Almost surely, 2^354662670221 is an apocalyptic number.

It is an amenable number.

354662670221 is a deficient number, since it is larger than the sum of its proper divisors (33811654699).

354662670221 is a wasteful number, since it uses less digits than its factorization.

354662670221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719396943.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 354662670221 in words is "three hundred fifty-four billion, six hundred sixty-two million, six hundred seventy thousand, two hundred twenty-one".