353665601 has 4 divisors (see below), whose sum is σ = 372279600. Its totient is φ = 335051604.

The previous prime is 353665561. The next prime is 353665607. The reversal of 353665601 is 106566353.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106566353 = 17 ⋅6268609.

It is a cyclic number.

It is not a de Polignac number, because 353665601 - 2⁶ = 353665537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (353665607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9306971 + ... + 9307008.

It is an arithmetic number, because the mean of its divisors is an integer number (93069900).

Almost surely, 2^353665601 is an apocalyptic number.

It is an amenable number.

353665601 is a deficient number, since it is larger than the sum of its proper divisors (18613999).

353665601 is a wasteful number, since it uses less digits than its factorization.

353665601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18613998.

The product of its (nonzero) digits is 48600, while the sum is 35.

The square root of 353665601 is about 18805.9990694459. Note that the first 3 decimals coincide. The cubic root of 353665601 is about 707.1815802117.

Adding to 353665601 its sum of digits (35), we get a square (353665636 = 18806²).

The spelling of 353665601 in words is "three hundred fifty-three million, six hundred sixty-five thousand, six hundred one".