149686 has 4 divisors (see below), whose sum is σ = 224532. Its totient is φ = 74842.

The previous prime is 149629. The next prime is 149689. The reversal of 149686 is 686941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 686941 = 23 ⋅29867.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149689) by changing a digit.

149686 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37420 + ... + 37423.

It is an arithmetic number, because the mean of its divisors is an integer number (56133).

2¹⁴⁹⁶⁸⁶ is an apocalyptic number.

149686 is a deficient number, since it is larger than the sum of its proper divisors (74846).

149686 is an equidigital number, since it uses as much as digits as its factorization.

149686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74845.

The product of its digits is 10368, while the sum is 34.

The square root of 149686 is about 386.8927499967. The cubic root of 149686 is about 53.0958275822.

The spelling of 149686 in words is "one hundred forty-nine thousand, six hundred eighty-six".