355120661 has 8 divisors (see below), whose sum is σ = 406632384. Its totient is φ = 303804000.

The previous prime is 355120651. The next prime is 355120679. The reversal of 355120661 is 166021553.

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 355120661 - 2¹⁰ = 355119637 is a prime.

It is a super-2 number, since 2×355120661² = 252221367738153842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355120651) 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, 44840 + ... + 52161.

It is an arithmetic number, because the mean of its divisors is an integer number (50829048).

Almost surely, 2^355120661 is an apocalyptic number.

It is an amenable number.

355120661 is a deficient number, since it is larger than the sum of its proper divisors (51511723).

355120661 is an equidigital number, since it uses as much as digits as its factorization.

355120661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97531.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 355120661 is about 18844.6454198534. The cubic root of 355120661 is about 708.1500880112.

The spelling of 355120661 in words is "three hundred fifty-five million, one hundred twenty thousand, six hundred sixty-one".