355386661 has 12 divisors (see below), whose sum is σ = 418394592. Its totient is φ = 300943608.

The previous prime is 355386637. The next prime is 355386673. The reversal of 355386661 is 166683553.

It is not a de Polignac number, because 355386661 - 2⁹ = 355386149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355387661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39625 + ... + 47758.

It is an arithmetic number, because the mean of its divisors is an integer number (34866216).

Almost surely, 2^355386661 is an apocalyptic number.

It is an amenable number.

355386661 is a deficient number, since it is larger than the sum of its proper divisors (63007931).

355386661 is an equidigital number, since it uses as much as digits as its factorization.

355386661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87480 (or 87473 counting only the distinct ones).

The product of its digits is 388800, while the sum is 43.

The square root of 355386661 is about 18851.7018064683. The cubic root of 355386661 is about 708.3268550765.

The spelling of 355386661 in words is "three hundred fifty-five million, three hundred eighty-six thousand, six hundred sixty-one".