165646532 has 6 divisors (see below), whose sum is σ = 289881438. Its totient is φ = 82823264.

The previous prime is 165646531. The next prime is 165646573. The reversal of 165646532 is 235646561.

It is a happy number.

165646532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 96157636 + 69488896 = 9806^2 + 8336^2 .

It is not an unprimeable number, because it can be changed into a prime (165646531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20705813 + ... + 20705820.

It is an arithmetic number, because the mean of its divisors is an integer number (48313573).

Almost surely, 2^165646532 is an apocalyptic number.

It is an amenable number.

165646532 is a deficient number, since it is larger than the sum of its proper divisors (124234906).

165646532 is a wasteful number, since it uses less digits than its factorization.

165646532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41411637 (or 41411635 counting only the distinct ones).

The product of its digits is 129600, while the sum is 38.

The square root of 165646532 is about 12870.3741981343. The cubic root of 165646532 is about 549.1961060214.

The spelling of 165646532 in words is "one hundred sixty-five million, six hundred forty-six thousand, five hundred thirty-two".