149697 has 6 divisors (see below), whose sum is σ = 216242. Its totient is φ = 99792.

The previous prime is 149689. The next prime is 149711. The reversal of 149697 is 796941.

It can be written as a sum of positive squares in only one way, i.e., 103041 + 46656 = 321^2 + 216^2 .

It is not a de Polignac number, because 149697 - 2³ = 149689 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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8308 + ... + 8325.

2¹⁴⁹⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

149697 is a deficient number, since it is larger than the sum of its proper divisors (66545).

149697 is a wasteful number, since it uses less digits than its factorization.

149697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16639 (or 16636 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 149697 is about 386.9069655615. The cubic root of 149697 is about 53.0971281709.

The spelling of 149697 in words is "one hundred forty-nine thousand, six hundred ninety-seven".