353649 has 4 divisors (see below), whose sum is σ = 471536. Its totient is φ = 235764.

The previous prime is 353641. The next prime is 353653. The reversal of 353649 is 946353.

It is a happy number.

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: 946353 = 3 ⋅315451.

It is not a de Polignac number, because 353649 - 2³ = 353641 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 353649.

It is not an unprimeable number, because it can be changed into a prime (353641) 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, 58939 + ... + 58944.

It is an arithmetic number, because the mean of its divisors is an integer number (117884).

2³⁵³⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

353649 is a deficient number, since it is larger than the sum of its proper divisors (117887).

353649 is a wasteful number, since it uses less digits than its factorization.

353649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117886.

The product of its digits is 9720, while the sum is 30.

The square root of 353649 is about 594.6839496741. The cubic root of 353649 is about 70.7170515046.

Subtracting 353649 from its reverse (946353), we obtain a cube (592704 = 84³).

The spelling of 353649 in words is "three hundred fifty-three thousand, six hundred forty-nine".