165631652 has 12 divisors (see below), whose sum is σ = 291458076. Its totient is φ = 82357920.

The previous prime is 165631651. The next prime is 165631679. The reversal of 165631652 is 256136561.

It can be written as a sum of positive squares in 2 ways, for example, as 85636516 + 79995136 = 9254^2 + 8944^2 .

It is not an unprimeable number, because it can be changed into a prime (165631651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113663 + ... + 115110.

It is an arithmetic number, because the mean of its divisors is an integer number (24288173).

Almost surely, 2^165631652 is an apocalyptic number.

It is an amenable number.

165631652 is a deficient number, since it is larger than the sum of its proper divisors (125826424).

165631652 is a wasteful number, since it uses less digits than its factorization.

165631652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228958 (or 228956 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 165631652 is about 12869.7961133811. The cubic root of 165631652 is about 549.1796607978.

The spelling of 165631652 in words is "one hundred sixty-five million, six hundred thirty-one thousand, six hundred fifty-two".