159649 has 4 divisors (see below), whose sum is σ = 182464. Its totient is φ = 136836.

The previous prime is 159631. The next prime is 159667. The reversal of 159649 is 946951.

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.

It is an interprime number because it is at equal distance from previous prime (159631) and next prime (159667).

It is not a de Polignac number, because 159649 - 2⁵ = 159617 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (159629) 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, 11397 + ... + 11410.

It is an arithmetic number, because the mean of its divisors is an integer number (45616).

2¹⁵⁹⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

159649 is a deficient number, since it is larger than the sum of its proper divisors (22815).

159649 is an equidigital number, since it uses as much as digits as its factorization.

159649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22814.

The product of its digits is 9720, while the sum is 34.

The square root of 159649 is about 399.5610091087. The cubic root of 159649 is about 54.2486249094.

It can be divided in two parts, 159 and 649, that added together give a palindrome (808).

The spelling of 159649 in words is "one hundred fifty-nine thousand, six hundred forty-nine".