149617 has 8 divisors (see below), whose sum is σ = 170856. Its totient is φ = 129792.

The previous prime is 149603. The next prime is 149623. The reversal of 149617 is 716941.

It can be written as a sum of positive squares in 4 ways, for example, as 62001 + 87616 = 249^2 + 296^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149617 - 2⁷ = 149489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118 + ... + 559.

It is an arithmetic number, because the mean of its divisors is an integer number (21357).

2¹⁴⁹⁶¹⁷ is an apocalyptic number.

149617 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

149617 is a deficient number, since it is larger than the sum of its proper divisors (21239).

149617 is a wasteful number, since it uses less digits than its factorization.

149617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707.

The product of its digits is 1512, while the sum is 28.

The square root of 149617 is about 386.8035677188. The cubic root of 149617 is about 53.0876678897.

The spelling of 149617 in words is "one hundred forty-nine thousand, six hundred seventeen".