149646 has 24 divisors (see below), whose sum is σ = 348840. Its totient is φ = 42672.

The previous prime is 149629. The next prime is 149689. The reversal of 149646 is 646941.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 40 + ... + 548.

It is an arithmetic number, because the mean of its divisors is an integer number (14535).

2¹⁴⁹⁶⁴⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174420).

149646 is an abundant number, since it is smaller than the sum of its proper divisors (199194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149646 is a wasteful number, since it uses less digits than its factorization.

149646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 521 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 149646 is about 386.8410526301. The cubic root of 149646 is about 53.0910976312.

The spelling of 149646 in words is "one hundred forty-nine thousand, six hundred forty-six".